_____ the crisis of economy getting more and more serious, the government is searching for ways to improve people' s life.
| A．As | B．With | C．When | D．If |
When __ alone, the child will make trouble.
| A．leaving | B．being left | C．having left | D．left |
Peter __ come with us tonight, but he isn’t very sure yet.
| A．must | B．can | C．may | D．will |
---The computer cost him 20, 000 dollars. ---It ____ be that expensive.It’s a used computer.
| A．may not | B．can’t | C．mustn’t | D．needn’t |
The captain __ an apology to the passengers for the delay caused by bed weather.
| A．made | B．said | C．put | D．passed |
Mr. Wang has two sons, ___ looks like him.
| A．both of whom | B．neither of whom | C．all of them | D．each of them |