They had much difficulty ____________ the problem and they needed our help.
| A．working out | B．work out |
| C．worked out | D．to work out |
—He didn’t go to the lecture this morning, did he?
— _____ ．Though he was not feeling very well．
| A．No, he didn’t | B．Yes; he did |
| C．No, he did | D．Yes, he didn’t |
They preferred ______ in b
ather than _____ horses．
| A．to lie; to ride | B．lying; riding | C．to lie; ride | D．lying; ride |
A friend of my ____ and I are going to visit_______ next week．
| A．father; Browns | B．father's; the Browns |
| C．father; the Browns | D．father's; Browns |
The shop _____ at 8:00 a．m．and it ________ for ten hours every day．
| A．opens; is open | B．is opened; opens |
| C．is open; has opened | D．opened; opens |
––Who is on the playground? ---__________．
| A．No one | B．None | C．Never | D．A lot |