--- What’s this ? --- .
| A．This is a ruler. | B．r-u-l-e-r |
| C．Its a ruler | D．It’s a ruler. |
They will visit the Great Wall if it _________ tomorrow.
A. isn’t rain B. doesn’t rain C. won’t rain
Maria ____________ so fast as Jane.
A. run B. not run C. doesn’t run
_________ can help us, we had to do it by __________.
A. Somebody; ourselves B. Anybody; yourselves
C. Nobody; ourselves
He had to give up his job ___________his illness.
A. because B. because of C. instead of
It’s easy to _____ this math problem.
A. work out B. find out C. look out