—Did you find your lost key?—No, but I think ________ must have picked it up.
A.nobody B.somebody
C.anybody D.everybody
Something is wrong with my PDA.I will get it ___________ .
A. repair B. repairing
C. to repair D. repaired
The woman you saw at the park ________ be Jane. She is at work now.
A.must B.might C.can D.can't
They ________ next Monday.
A.gets married B.got married
C.gotten married D.will get married
Teenagers should try_______best to get good grades and not let their parents or teachers _________
A.them, down B.their ,down
C.them’s , happy D.their, happy
The woman _______ is singing in the hall is our teacher.
A. what B. which C. who D. whom