② Choose the best option. (各2点 ⑪ This medicine must ( take / be taken / have taken ) twice a day. ② The gt Show is (being held / been held / holding ) on the ninth floor ⑬ The pop singer is known (as / for / to ) most young people. ⑭⑳ He was caught (by / in / with ) a traffic jam on his way to work. 替 5 The comedian was ( laughed at / laughed by / laughed at by ) the audience.