the illness pneumonia, Jackson couldn’t go on teaching.
| A．As a result | B．As the result |
| C．As result of | D．As a result of |
A chemical works____ built there.
| A．is to being | B．have been | C．were to | D．has been |
Chairman Mao' s works ____ published.
| A．has been | B．have been | C．was | D．is |
The Arabian Nights ____ well known to the English.
| A．is | B．are | C．was | D．were |
The number of deer, mountain lions and wild roses ____ much if people leave things as they are.
| A．doesn' t change | B．don't change | C．change | D．changed |
A large number of students in our class____ girls.
| A．are | B．was | C．is | D．be |