16.The advertisements are trying ________ people to buy things they don‘t really need.
A. persuade B. persuading C. be persuading D. to persuade
17.Practice ________ English every day.
A. speak B. to speak C. speaks D. speaking
18.The discount houses were first established in that period of time ________ people‘s purchasing power was low.
A. which B. that C. when D. where
19.Please write a report ________ the above subjects are to be covered.
A. which B. in which C. that D. in thatwww.examw.com
20.The reason ________ I‘m writing is to ask for your permission to translate your latest novel into Chinese.
A. because B. why C. for D. as
16.正确答案：D答案解析：try to do：试图做某事。
18.正确答案：C答案解析：先行词是in that period of time，所以关系词应选择when.
19.正确答案：B答案解析：in which the above subjects are to be covered是report的定语从句。which指代先行词report，in用于与report搭配。