.Mr. Li_____a secretary for five years in the company, and now he is the general manager of it.

A. is          B. was                  C. had been      D. has been

Mr. Li, a man calling himself Smith wants to see you. ________ he come in?

1. A.
   Should
2. B.
   Can
3. C.
   Shall
4. D.
   Will

 Mr. Li, a man calling himself Smith wants to see you. ________ he come in?

The trees ＿＿＿front of the house are ＿＿＿the charge of Mr. Li.

A. in； in     B. at； in     C. in； by     D. from； in

The trees ＿＿＿front of the house are ＿＿＿the charge of Mr. Li.

A. in； in     B. at； in     C. in； by     D. from； in