.--- 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
--We failed in the English speech competition.
---What ____________news!
A. frustrating
B. a frustrating
C. frustrated
This pair of trouserssilk and cotton.
| A．is made of | B．are made of |
| C．is made from | D．are made from |