非谓语动词精讲精炼13 551. do i have to take all this medicine? it _______ so terrible. a. tastes b. is tasting c. is tasted d. has tasted 答案 a 552. ___________ in the countryside made mr. wilson very hardworking when he was still young. a. bringing up b. being brought up c. having brought up d. brought up 答案 b 553. a good knowledge of english is helpful if you are devoted to english literature. a.be studied b.study c.studied d.studying 答案 d