.I am not sure ____ . Which of the following is not right?
| A．which club shall I join next term |
| B．how much sleep we need every day |
| C．what life would be like without hobbies |
| D．why he always feels tired in class |
The volunteer spoke as clearly as she could_____________the visitors understand her.
A. to makeB.makingC.made
--Is Jack in his room?
---No,I saw him _____ out with his backpack just now.
A. go B. going C. went
.--- Cathy could swim when she was only 4 years old.
---_______________.
A. So did Jack.
B.So can Jack
C. So could Jack
Waste water ____________________into Xiang River.It’s our duty to keep it clean.
A. shouldn’t be poured
B. mustn’t pour
C. can’t pour
______is very popular among the young people.
A.Chew gum
B. Chewing gum
C.To chewing gum