—Have you finished the book? —No. I've read up to __________ the children discover the secret cave.
| A．which | B．what | C．that | D．where |
He was a bit nervous. He _________his spare breath with a soft sound that was almost heard by the audience.
| A．gave out | B．let out | C．picked out | D．blew out. |
Not until he went through real hardship ________the love we have for our families is important.
| A．had he realized | B．did he realize | C．he realized | D．he had realized |
Measures have been taken to fight ________recurring food safety problems, but there is still a long way to go before China can rid itself ________ these issues.
| A．for; of | B．for; from | C．against; of | D．against; from |
“Only two centimeters higher, _______break the world record,” encouraged the coach.
| A．you will | B．and you will | C．or you will | D．will you |
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 |