Going abroad to study requires a big adjustment and it usually takes a while to ______．
| A．calm down | B．fit iri | C．keep up | D．cheer up |
Some scientists believe that it won’t be long _______ robots are widely used in all walks of life．
| A．since | B．after | C．before | D．until |
Under no circumstances _______ the difficulties when they were on an expedition to the Antarctic．
| A．they gave way to | B．did they give way to |
| C．they had given way to | D．had they given way to |
In the city, I saw so grand a National Day celebration _______ I never dreamed of．
| A．which | B．as | C．that | D．when |
If only I _______ more confidence in the English speech contest held last week!
| A．would have | B．had | C．had had | D．have |
According to the school rules, no child _______ be allowed out of the school during the day, unless accompanied by an adult．
| A．will | B．would | C．might | D．shall |