He will come to understand your efforts sooner or later. It’s just a matter of _____.
| A．luck | B．value | C．time | D．fact |
My friend ______ a birthday present for me last Sunday.
A. buy B. buys C. bought
He is eating dinner, _____ then the telephone rings.
A. and B. but C. or
We are _____ the supermarket now.
A. at B. under C. on
They ________ for twelve hours a day.
A. eating B. eats C. eat
We say thank you ________ all the good _______ we have.
A. for , thing B. from , things C. for , things