Robert is said ___________ abroad, but I don’t know what country he
studied in.
| A．to have studied | B．to be studying | C． to study | D．to have been studying |
It is vital that every piece of equipment ________ before the experiment.
| A．is checked | B．will be checked |
| C．be checked | D．must be checked |
— I hear you _____ in a pub. What’s it like?
— Well, it’s very hard work and I’m always tired, but I don’t mind.
| A．are working | B．will work | C．were working | D．will be working |
Nowadays, there is a ______ increase in children’s creativity, for they are greatly encouraged to develop their talents.
| A．sharp | B．small | C．natural | D．much |
His teacher is the only one ______ he can turn when he is in trouble.
| A．in whom | B．to whom | C．for whom | D．from whom |
_____ of their bad habits, the boys switched from being dependent on their parents to _____ for others.
| A．Having rid; sacrificing | B．To rid; sacrifice |
| C．Rid; sacrificing | D．Having been rid; sacrifice |