—I doubt if he __________ to the party with us tonight.— I believe if he __________ his homework, he will go with us.
When you find some new words, you’d better in the dictionary.
Our teacher added that watching English-language TV also helpful.
“do you study a test?” “I study by reading the textbook.”
The air pollution in this area caused the of many trees.
He’s never read such an interesting book. And _____.