—Listen! There is a knock on the door． Who _____ it be?
—It must be Jack． Just now I sent for him．
A． shall B． can C． must D． might
—What made her so happy?
—_____ her son passed the driving test．
A． That B． Because C． Since D． When
I would have come earlier, but I _____ that you were waiting for me．
A． didn’t know B． hadn’t known
C． haven’t known D． wouldn’t have known
During the opening ceremony, “Miss Smile” has won the hearts of Chinese Internet users after being caught _____ the same smile for nearly 20 minutes．
A． fixed B． to be fixed
C． to fix D． fixing
Things like eye contact and hand gestures _____ great importance in situations such as job interviews．
A． take in B． take off C． take on D． take down
—Don’t you think Obama is _____ success?
—Yes, I do． He is popalar with _____ public in America．
A． / , a B． a, a C． the, a D． a, the
