.
He left without a word as if _______.
A, never to teturn B. never returning
C.he had never returned D.he would never be returning
---Would you like something about my foreign teacher?
---Oh,I remember _____ about her yesterday.
| A．telling | B．being told | C．to tell | D．having told |
We should remember to save water resource and not to leave the water_____all the time.
| A．to be running | B．to run | C．running | D．run |
_____ in the garden for an hour, the girl suddenly realized she had forgot locking her car door.
| A．Reading | B．To read | C．Having read | D．To have read |
---We should forgive him for making such mistakes.
---You are right, ______ that he is only a new hand.
| A．being considered | B．considering | C．to be considered | D．considered |
He must be helping the old man to water the flowers,______ ?
| A．is he | B．isn’t he | C．must he | D．mustn’t he |