_____, he cannot solve the word puzzle.
| A．Hard although he tried | B．He tried hard although |
| C．However hard he tried | D．As he tried hard |
We don’t allow in the lecture hall, so you are not allowed here.
| A．smoking...smoking | B．to smoke...to smoke |
| C．smoking...to smoke | D．to smoke...smoking |
There is something wrong with my bike, so I’ll get it tomorrow.
| A．repairing | B．being repaired | C．to repair | D．repaired |
The most interesting thing we should pay attention to is the first thing
I have said.
| A．which...that | B．that...which |
| C．which...which | D．that...that |
When first to the market, these products enjoyed great success.
| A．introducing | B．introduced | C．to introduce | D．being introduced |
There is cooking oil left in the house. Would you go and get .
| A．little...any | B．little...some | C．a little...any | D．a little...some |