III- Khoanh tròn phương án đúng để hoàn thành các câu sau:
1.  Are you scared ............. seeing the dentist?
A. about                  B. in                              C. of                        D. at
2.  He .........................very happy yesterday.
A. is                       B. was                            C. were                    D. are
3.  I received a letter  ....................your aunt last week.
A. from                   B. to                               C. of                        D. by   
4. Don’t eat too...................... candy.
A. many                  B. much                        C. lots of                 D. lot of
5. Wash your hands ................... meals.
A. after                    B. in                            C. during                 D. before
6. Remember .................. your teeth after meals.
A. brush                   B. to brush                  C. brushing            D. brushes
7. She looks tired. What’s the ....................with her?
A. wrong                 B. happen                     C. matter               D. matters
8.  Minh is absent today .................he is ill.
A. why                   B. because                     C. when               D. of
9.   .............................. come to the meeting last night?- Because I was busy.
A. Why did you     B. When did you          C. Who did you    D. Why didn’t you
10.  ...................... helped Lan make her dress?- Mrs. Lien.
A. How                  B. What                       C. Where                D. Who