20.The boy tried hard but there has been ______ in his work.

20.The boy tried hard but there has been ______ in his work.A.little improvementB.a little improvementC.many improvementsD.few improvements
21.Whoever ______ a full night’s sleep will be more than rewarded in heightened productivity,creativity and focus.A.invests at B.invests in C.invests by D.invests with
22.All the people at the conference are ______.A.mathematic teachersB.mathematics teachersC.mathematics teacherD.mathematic’s teachers
23.While living there,she ______ the local accent.A.picked onB.picked atC.picked upD.picked out
24.A pretty face may win friends but it takes character and personality to hold ______.A.itB.themC.thatD.one
25.The little baby was left alone,with ______ to look after it.A.someoneB.anyoneC.not oneD.no one
26.Recently,he has lost all his ______.A.wage and saving at cardB.wages and savings at cardC.wages and saving at cardD.wages and savings at cards
27.She was operated a month ago but now she was ______.A.very good B.very well C.healthy D.good conditioned
28.The safety of shops ______ sea depends much on the warnings given by lighthouses.A.inB.acrossC.onD.at
29.Will you please see ______ our luggage when I am away?A.toB.inC.withD.for
30.It was ______ he bought the magazine.
A.from a second-hand store where B.a second-hand store in which C.in a second-hand store that D.in a second-hand store where
31.The modern machine proved ______ in heart surgery.A.high valuableB.highly valuableC.valuable highD.valuable highly
32.______ feels entitled to more in life than just housework.A.Many womenB.A lot of womanC.Many a womanD.A few woman
33.The doctor was always ______ the poor and the sick,often giving them free medical services.A.reminded ofB.absorbed inC.tended byD.concerned about
34.Ann’s habit of riding a motorcycle up and down the road early in the morning annoyed the neighbors and ______ they took her to the court.A.in the endB.at the endC.in an endD.in end
35.Some quite artistic,yet inexpensive fabrics are now being _____ from British mills.A.turned overB.turned outC.turned upD.turned off
36.I go to the cinema ______ day,Tuesdays,Thursdays,and Saturdays.A.each otherB.every otherC.this and the otherD.all other
37.The like to take a vacation ______.A.one time the yearB.one time in a yearC.once a yearD.once in a year
38.On his way to school he met ______,so he sent him to hospital.A.very ill manB.much sick manC.serious ill manD.very sick man
39.I left for the office earlier than usual this morning ______ traffic jam.A.in case ofB.in line withC.for the sake ofD.at the risk of
40.Not long ago,a person who I know every well was ______ an accident.A.related toB.included inC.involved inD.subject to

20.A.improvement是不可数名词 意思是“进步”
21.B,invest in 投入,投进
22.A,mathematic teachers,数学老师,复数在老师,不在数学
23.C,picked up,捡起,引申出不小心养成某种习惯
24.D,这个翻译一下就懂了,漂亮的脸蛋可能会让你得到很多朋友,但真要拥有一个朋友,需要的还是人格魅力.
25.D,alone的意思就是独自的,所以没人照看
26.D,wages指工资,savings指存款,at cards指在打牌上
27.B well表示身体状况
28.C on 海上船只
29.A see to,照料 照看
30.C,强调句型
31.B highly 在这里表示程度,修饰形容词
32.C.feel后面加了单三形式,只有many a xxx后面动词用单三形式
33.A.be reminded of 想起
34.A,固定词组,表示最后
35.B mill是磨坊的意思,所以答案应该是被制造出,选turned out
36.B,every other day 是每隔一天的意思
37.C,once a year,一年一次
38.这题有问题,掉了点什么,ill和sick都可以被very修饰
39.C我今天提前离开了办公室,考虑到可能会堵车.
40.C,be involved in被牵扯进某事件中
终于做完了,吼吼,不知道你是只要答案还是需要解析,就啰嗦了一下.