______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 |
When to go for a holidayyet.
| A．has not been decided | B．have not been decided |
| C．are not decided | D．isn’t being decided |
The old man always made ushimin the fields.
| A．help; working | B．to help; to work |
| C．help; to work | D．helping; work |