Generally speaking, _____ according to the directions, the drug has no side effect.
| A．when taking | B．when taken |
| C．when to take | D．when to be taken |
_____ I do feel pity, I can’t really do very much to help them out of the difficulty.
| A．As long as | B．As | C．while | D．Even |
The people living in these apartments have free ___to the swimming pool.
| A．time | B．entrance | C．charge | D．access |
Asweallknow, typingisa___jobtoa__ heart.
A tired ，tired B. tired ，tiring C.tiring，tired D. tiring，tiring
Among the competitors, there are three little girls, is Mary.
| A．the smallest of whom | B．the smaller of whom |
| C．the smallest of them | D．the smallest one |
The Great Wall travels______ deep valleys, _____ deserts and______ mountains.
| A．over; across; through | B．through; across; over |
| C．across; over; through | D．through; across; across |