John does important research _______ the best ways to help the old.
| A．finds | B．finds | C．found | D．to find out |
— Excuse me, but can I take the seat?
— , young man. It’s for the elderly only.
| A．You’d better not | B．You’d better don’t |
| C．Why not | D．Never mind |
— Now, the fruit is ready. What should I do next?
— the watermelon into small pieces.
| A．Cutting | B．To cut | C．To cutting | D．Cut |
_____your support, we couldn’t finish the job very quickly.
| A．Under | B．With | C．For | D．Without |
Not only my cousin but also his parents interested in DIY. They often make many interesting things.
| A．are | B．is | C．were | D．was |
No one taught ________ English. He learned it _________.
| A．him; by himself | B．his; by himself |
| C．him; for himself | D．he; by himself |