Usually E-mail is_________ than long-distance calling．

______ wind or rain, we always go to school on time.

Has your brother ever been to the Sand Lake?––Yes, he has _______ the Sand Lake many times.

There are 60 students in my class and 44 of them use weibo veryoften.—44? That means about_______of your classmates are weibo users, right?

Mr. Smith has bought a large house a swimming pool.[ ]