______giving a general introduction to computer, the course also provides practical experience.
| A．In exchange for | B．Except for | C．In addition to | D．Due to |
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 |
A. notice was______ in order to remind the students of the changed lecture time.
A. sent up B. given up C. set up D. put up