_____ I toured Jiuzhaigou, I was deeply impressed with its beautiful scenery.
| A．For the first time | B．At first | C．It was the first time | D．The first time |
We’ll live with the local people in their villages, and eat and drink whatever they ____, including cow’s blood.
| A．will | B．do | C．can | D．are |
I still remember that terrible accident a few days ago, ____ more than 20 pupils were killed.
| A．where | B．that | C．on which | D．which |
The police said they would not give up looking into other possibilities ____they find out what happened.
| A．as | B．while | C．until | D．although |
When Justin didn’t ____ for lunch the next day, Mrs Foster became worried and called the police.
| A．give up | B．show up | C．make up | D．stay up |
If ____ in, the viruses can result in illness or even deaths.
| A．breathed | B．to breathe | C．breathes | D．is breathed |