.--- Do you know Uncle Tom is crazy about gardening?
---Sure. He ____ his flowers in the garden now.
| A．may be watering | B．must be watering |
| C．could look after | D．ought to watch |
Jane warns us that our group is going to be very tired and dirty by the afternoon and she is right. However, the evening makes it all ______.
A. favorable B. worthwhileC. precious D essential
Many of them have ______ gift for riding wild horse and can win thousands of dollars in prize.
| A．/ | B．an | C．a | D．the |
Everybody sits and waits in the shade of the trees while the family begins to wake up and ______.
| A．move off | B．move on | C．move out | D．move in |
They are putting too much carbon dioxide into the atmosphere, ______ prevents heat from escaping from the earth into space.
| A．what | B．that | C．which | D．who |
----I’m thinking of the test tomorrow, I’m afraid I can’t pass this time.
----! I’m sure you’ll make it.
| A．Go ahead | B．Good luck | C．No problem | D．Cheer up |