You don’t have to describe her. I _______ her several times.

A. had met       B. have met       C. met      D. meet 

--- I called you at seven yesterday evening, but there was no answer.　　　　　

--- Oh, I am sorry. I _______ dinner at my friend's home.　　　　　

A. am having　　 B. had　 C. was having　　 D. have had

--- _____ the young girl _____ the old man clean his room every day?　　　　　

--- Yes, she does.

A. Does; help B. Has; helped C. Did; help　 D. Do; helps

 There _______ no hospitals in my hometown fifty years ago.          

A.  is        B. are        C. was          D. were

 Li Fang is very busy, _______she’s always helping others with their lessons.

  A. but        B. although        C. so        D. for

 He is sitting _______ the room that is _________ the old tree.

A. in the front of/in the front of                          B. in front of/in the front of

C. in front of/in front of                                D. in the front of/in front of

 ____ the sun, nothing would grow.

A. For                       B.With                          C. Under               D. Without

 Children usually go to ______ school at ______ age of six.
A. ×; the                  B. a; an                 C. the; ×                      D. the; the

Water pollution is one of ___ in our country.

A. serious problem                      B. the more serious problems

C. most serious problems                D. the most serious problems

 Simon looks ____ today and smiles ____ all the time.

A. happy; happy  B. happily; happily     C. happy; happily         D. happily; happy