-- I have got a headache.
-- No wonder. You_________ on the math exercises too long.
| A．work | B．are working | C．have been working | D．worked |
Afteryouhavelearnedsomethingnew,itisimportantthatyoutryto_________.
| A．bringitup | B．letgoofit | C．getridofit | D．putitintopractice |
Do you know the boy _______ under the big tree?
| A．lay | B．lain | C．laying | D．lying |
－What do you think of the book?
－Oh, excellent. It’s worth ______ a second time.
| A．to read | B．to be read | C．reading | D．being reading |
Go on _______ the other exercise after you have finished this one.
| A．to do | B．doing | C．with | D．to be doing |
There was a terrible noise ______ the sudden burst of light.
| A．followed | B．following | C．to be followed | D．being followed |