The park is far away from here indeed. It’s about _______ walk.
| A．a three hour | B．a three hour’s |
| C．a three-hours | D．a three- hour |
How long ____ his grandfather ____ ?
A. has, been dead
B. has, died
C. did, die
We’d better ____ out .It’s going to rain.
A. not to go B. don’t go C. not go
Shanghai is a beautiful city. I _____ there twice .
A. went B. have gone C. have been
He used ___ in the morning , but now he gets used _____ after supper.
A to study, studying
B. to study, to studying
C. to studying , to study
The naughty boy stopped ____ when the teacher went away.
A. play B. to play C. playing