--Do you have any plans for this summer vacation?
--I'm not sure. I ___ take a trip to Taiwan.
| A．must | B．need | C．may | D．should |
His father ________ in the factory since he was twenty.
| A．works | B．has worked | C．will work | D．was working |
--Be quiet! The children ____________ now.
--Oh, sorry.
| A．sleep | B．slept | C．were sleeping | D．are sleeping |
My brother __________ to Canada to learn English in 2005.
| A．went | B．goes | C．will go | D．would go |
Jim, hurry up, ________ we’ll be late for the concert.
| A．but | B．or | C．so | D．and |
Look! The students are playing on the playground. Some are running, some are playing basketball, ________ are watching.
| A．other | B．the other | C．another | D．others |