I’m thinking about ______ to the mountains for vacation.
| A．go | B．went | C．going | D．to go |
.We often hear him ______ the piano in the afternoon.
| A．plays | B．play | C．playing | D．to play |
.I don’t remember _______ the book yesterday.
| A．where I put | B．where did I put |
| C．where will I put | D．where I will put |
_______ useful information it is!
| A．What | B．How | C．What a | D．How a |
She is a _______ girl and she always says to her teachers _______.
| A．polite; politely | B．politely; polite |
| C．polite ; polite | D．politely; politely |
.The math problem is _______ hard for me ______ work out.
| A．both; and | B．so; that |
| C．enough ; to | D．too; to |