IF HE WANTS TO CATCH THE BUS, HE HAD BETTER ... IF HE WANTS TO...

12. - 3500 CAU TRAC NGHIEM ON TAP AV THCS

3500 CAU TRAC NGHIEM ON TAP AV THCS

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Đáp án tham khảo

12. If he wants to catch the bus, he had better ...

a. to run

b. running

c. run

d. ran

 c