I am concerned __________ it that I can't concentrate __________ my work because of headache.
| A．of; on | B．of; of |
| C．about; on | D．about; to |
----Do you think Jim will pass the Chemistry exam?
----Sure. He ______a lot of time on it.
| A．took | B．cost | C．paid | D．spent |
He ______the bus and found a seat next to the window.
| A．got down | B．got off | C．got on | D．got out |
----What are you doing, Emily?
----I’m ______the radio. The music is so beautiful.
| A．watching | B．listening to | C．hearing | D．mending |
They are busy______ready for the exam.
| A．get | B．getting | C．to get | D．got |
It’s rather cold outside. Heree’s a coat. ______, please.
| A．Pick it up | B．Put it on | C．Take it off | D．Turn it down |