—Where are Jeff and Jack?—They _______ in the river.
| A．are taking a walk | B．are swiming |
| C．are swimming | D．are playing basketball |
---I would like to sit in _______ front of the bus.
---Me,too. And we can have__________better view.
| A．/, the | B．/, a |
| C．the,a | D．the, the |
--If I work hard at my lessons from now on, can I do well in them?
---Sure. ___________.
| A．All rivers run into sea | B．Every day is not Sunday |
| C．Better late than never | D．Practice makes perfect |
--- Kitty, do you know ______?
---Sure, about forty minutes.
| A．when did their class meeting begin. |
| B．where their class meeting was held |
| C．how often their class meeting is held |
| D．how long their class meeting will last |
Frank often wears a mask _____ he can keep fit in the foggy and hazy (霾) weather.
| A．only if | B．until |
| C．so that | D．even though |
When the sun ___ in the east, the little hero tried hard ___ the red flag to the top of the pole.
| A．rising… to rise | B．rose… to raise |
| C．rose… raising | D．rising… raising |