We often take _______, and we do morning _______ every day.
| A．exercise; exercises | B．exercises; exercises |
| C．exercise; exercise | D．exercises; exercise |
I think Book 6 is ________ than Book 5.
| A．much difficult | B．very difficult | C．more difficult | D．the most difficult |
She kept _________ hard at her physics and finally caught up with us.
| A．work | B．worked | C．working | D．to work |
--- ________ you play international chess?
--- No, I can’t. But I can play Chinese chess.
| A．Must | B．Need | C．May | D．Can |
--- __________ are all these together?
--- 425 yuan.
| A．How much | B．How many | C．How long | D．How often |
Spring is coming and there ________ flowers everywhere.
| A．is | B．are | C．was | D．were |