This nationwide smog should serve as a reminder to all, indicating a high time that we____ on what we've done to the environment.
A. have reflected B. are reflecting
C. will reflect D. reflected
more effectively with others, more and more people equip themselves with a higher education.
A. Compete B. To compete
C. Being competed D. Competing
The new policy allows a couple to have a second birth____either is an only child.
A. if only B. on condition that
C. unless D. until
----Fancy meeting you here, Lucy! I never thought you visit us today.
----Sorry, I forgot to tell you I was coming. I hope you don't mind me____.
A. calling in B. pulling in
C. breaking in D. dropping in
If you go to the wildlife park, you will find the places there more dangerous than commonly_ __.
A. supposing B. suppose C. to suppose D. supposed
一I'm afraid I have to leave now, for you see, he is waiting for me.
----Well, if you_ , at least wait till the heavy rain stops.
A. could B. should C. must D. might
