I am working hard ( )French.A.at B.for C.in D.on
I am working hard ( )French.A.at B.for C.in D.on
I am _______ duty this week A.in B.at C.on D.for
he is working ( )a model plane now. a.on b.at c.for d.in
I am going to read a book _____ science.A.for B.on C.in D.at
I am looking ___ my watch.A.for B.at C.to D.on
He works( )French.A hard B hardly C hard at D hardly at
i am () Room606.A:at ,B:on c:in D :behind
i am __ duty a.on b.in c.at d.to
Who is ( )duty I am.A.in B.on c.of d.for
i must keep on working hard ()it?at in on for
I like to watch volleyball games ) TV A.in B.on C.at D.for 选
No,I spend only half an hour___it.A.in B.on C.at D.for