—How much is too much for a schoolbag?—Experts say students should carry_______ more than 10 or 15 percent of their body weight.
Collecting stamps ______ my father’s favorite hobby and reading novels ______ my mother’s favorite pastime.
In the last year, China has sent up many ______ satellites, _______ a weather satellite, a science satellite, a TV satellite and so on.
--- Don’t do that again. Don’t you think it _______? --- It maybe _______ to be successful.
Titanic is the most exciting film _______ I have ever seen.
______ has helped to save the drowning girl is worth praising.