1.We are in a difficult situation ______ we do not develop n

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1.We are in a difficult situation ______ we do not develop new products,we will end up closing our doors.
A.if B.where C.if where D.where if
2.The police couldn't give ___ quick explannation for why the building caught ___ fire.
A.不填；不填 B.a;a C.a;the D.a；不填
3.I would have told him the answer had it been possible,but I ___ so busy then.
A.had been B.were C.was D.would be
希望不仅能看到答案,还能得到解释（这是最重要的）!

1.A if引导条件状语从句..
2.D 给出一个明确的解释,后面是起来,不用填任何词.
3.C 前面是过去将来时（would）,还有过去完成时（had been）;后面则强调我当时很忙,所以选过去式（was）

1.We are in a difficult situation ______ we do not develop n -We seem to be in a very bad situation.What do we do next,Mr We do not live in the city.We are only ( ) It is not because things are difficult that we do not dare,i 1.we are in a difficult position in ___we have few people pr 17.We are aware that,,the situation will get worse.a.if not 英语翻译If we are to help students develop reading skills in a f we are not in the same grade,______ of course we are in diff It is a boring film,so we are not ______(interest) in it. The truth is that we are in a situation previously unknown t 英语翻译we are all in progress and when we (develop,reach,show,o 一道介词填空题We were faced ____ a difficult situation.