精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区

According to a recent survey, children spent up to 25 hours a week _____ TV.

A. to watch    B. to watching    C. watching    D. watch

According to a recent survey, children spent up to 25 hours a week _____ TV.

A. to watch    B. to watching    C. watching    D. watch

According to a recent U.S. survey, children spent up to 25 hours a week ____ TV.

A. to watch? ????????????? B. to watching? ????????????? C. watching? ????????????? D. watch

According to a recent U.S. survey, children spent up to 25 hours a week ______ TV.

A. to watch         B. to watching      C. watching         D. watch

According to a recent U.S. survey, children spent up to 25 hours a week _____ TV.

A. to watch             B. to watching       C. watching    D. watch

According to a recent U.S. survey, children spent up to 25 hours a week _________ TV.

A. to watch       B. to watching            C. watching          D. watch

According to a recent U. S survey, children spent up to 25 hours a week_______ TV.

A. to watch   　　　　　　　　　　　　　　　　　　　　　　　　　　   B. to watching

C. watching   　　　　　　　　　　　　　　　　　　　　　　    　　D. watch