Nobody will help you________ you help yourself.
A. unless B. because C. though
“you ever by listening to tapes?” “Yes, I have.”
| A．Did; study | B．Have; studied |
| C．Are; studying | D．Were; studying |
When you find some new words, you’d better in the dictionary.
| A．look up it | B．look up them |
| C．look it up | D．look them up |
Our teacher added that watching English-language TV also helpful.
| A．is | B．are | C．was | D．were |
“do you study a test?” “I study by reading the textbook.”
| A．What; at | B．Why; for |
| C．How; for | D．What; for |
The air pollution in this area caused the of many trees.
| A．die | B．died | C．death | D．dying |