“Isn’t it about time you _____ to do morning exercises？” “Yes, it is. Would you like to join us？”
| A．begin | B．have begun |
| C．began | D．had begun |
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 |
Was it at the school gate, if I may ask, _______ you met your friends from your hometown?
| A．where | B．that | C．which | D．ones |
China recently control its waters near the HuangYan Island to prevent Chinese fishing boats from ____in the South China Sea
| A．attacking | B．having attacked |
| C．being attacked | D．having been attacked |