Please remember to _____ a stamp _____ your envelope before you post it to your friend.
A. attach; to B. fasten; to
C. tie; to D. stick; by
When I was younger, I’d often go for _____ drive with some friends, purely for _____ enjoyment of it.
A.a; an B. a; the C. the; / D. /; the
The airport ___next year will help promote tourism in this area.
A. being completed B. to be completed
C. completed D. having been completed
Nowadays people are more concerned about the environment ___ they live.
A. what B. which C. when D. where
____ which university to attend, the girl asked her teacher for advice.
A. Not knowing B. Knowing not C. Not known D. Known not
He is so busy. He cannot afford enough time with his son ____he wants to.
A. even if B. as if C. because D. before
