--- The math problem is too difficult.
--- Don’t worry! Let’s find a good way _____ it.
| A．to solve | B．solve |
| C．solving | D．to solving |
He practices __________ English every day.
| A．saying | B．speaking |
| C．talking | D．telling |
I __________ my pen everywhere, but I didn't find it.
| A．looked down | B．looked after |
| C．looked for | D．looked out |
-The light in the office is still on.
-Oh, I forgot __________.
| A．turning it off | B．to turn it off |
| C．turning it on | D．to turn it on |
The socks are cheap（便宜的）， I’ll________ it.
| A．like | B．bring | C．sell | D．take |
Could I borrow your car? I'd go downtown. ___
| A．yes, you may borrow | B．yes, you could |
| C．yes, help yourself | D．yes, go on |