—Be careful ! There is _____dog lying on the ground.
—Thanks a lot.
| A．a | B．an | C．the | D．/ |
There used to ________ a clean river in the village, but now it’s dirty.
| A．be | B．being | C．have | D．having |
--- Thanks for asking me your party.
--- ______ .
| A．Never mind | B．Don’t say so |
| C．My pleasure | D．Yes, please |
David talked with a friend of ____ on the Internet for a long time yesterday.
| A．he | B．his | C．him | D．himself |
--- The windows are broken and need to be repaired.
--- I think so. They can hardly _____ the cold now.
| A．keep out | B．give out | C．take out | D．put out |
On holidays, they prefer to _____ at home rather than _____.
| A．staying, going hiking | B．stay, going hiking |
| C．stay, go hiking | D．staying, go hiking |