This is______ difficult problem that few students can work it out.
A. so B. so a C. such a
He lives _______ in the village, but he never feels_______.
A. alone; alone B. alone; lonely C. lonely; alone
—Hi, Li Ming. Why are you in such a hurry?
—_______ the 7:00 train.
A. To catch B. Catching C. Catch
We can’t put off _____ a plan .
A. make B. to make C. making
I saw him when I passed by.
A. ran B. to run C. running
Some people plan to ______ a volunteer organization to help the disabled children.
A. put up B. think up C. set up
