_______ we have learned about 2000 English words.
A. At first B. After all C. So far
Can you tell me _____ there are any good museums in the city?
A. if B. unless C. although
E-mail English _____ uses two types of words.
A. mainly B. strongly C. gradually
The water in the lakes and rivers in Shandong becomes ______ because of the dry weather .
A. less and less B. more and more C. fewer and fewer
David ______ his friend’s invitation in order to stay at home and have a good rest.
A. expected B. refused C. received
I think zoos can provide homes ______many endangered animals.
A. for B. with C. to
