The contributions of some companies have ________ much improvement in the teaching and learning environment in this university.
| A．carried out | B．changed from |
| C．resulted in | D．succeeded in |
She as well as her brother ____ a League member.
| A．are | B．were | C．will | D．is |
An iron and steel works, with some satellite factories, ____ to be built here.
| A．are | B．were | C．is | D．will |
____ either he or I to attend the mass meeting this evening.
| A．is | B．am | C．are | D．be |
Either he or I ____ to attend the mass meeting this evening.
| A．is | B．am | C．are | D．be |
To play basketball and to go swimming ___ useful for character-training.
| A．was | B．is | C．are | D．were |