We _____ estimate the spirit of the Shanghai Expo too much, which is sure to play an important role in our daily life.
| A.may not | B.should not | C.must not | D.cannot |
Father made a promise ______ I passed the exam, he would buy me a PS4.
| A.if | B.that if | C.whether | D.that |
--- Alex came back home the day before yesterday.
--- Really? Where ______ at all?
| A.had he been | B.has he been | C.had he gone | D.has he gone |
The dangerous virus ______ in the next few weeks in the laboratory can cause fatal diseases.
| A.studying | B.studied |
| C.to study | D.to be studied |
How can you expect him to make any progress ______ you never give him a chance to have a try?
| A.when | B.unless | C.once | D.until |
Getting all your teammates ______ in a game is the key to victory.
| A.trapped | B.settled | C.stuck | D.involved |