We shall probably never be able to _____ the exact nature of these sub-atomic particles.

[A] assert

[B] impart

[C] ascertain

[D] notify

[单选题]We shall advise you ____ we are able to supply the goods again.A . asB . whileC . as soon asD . until

[单选题]We shall never beable to [fulfill] ourselves truly unless we are working fo

[单选题]We shall never beable to [fulfill] ourselves truly unless we are working fo

[单选题]We have agreed that we shall ________ to the policy and will not change it.

[单选题]---- Shall we stay at home watching TV tonight?---- No, I’d like __________ and see a movie.A． to go B. go C. went D. going

[单选题]------ Shall we have our picnic tomorrow?-----______it doesn’t min.A． Until B. While C. Once D. If

[单选题]We can never expectbluer sky unless we create less polluted world.A． a; a B. a; theC． the; a D. the; the

[单选题]Shall we go out for dinner tonight?- _________。A.No, you can't.B.Yes, pleas

[问答题]It is certain that we shall produce this kind of engine

[单选题]We shall do everything possible to assist you in（）a mutually beneficial trade.A . developingB . developedC . developD . development