The students were playing football happily on the playground ______ it began to rain heavily.
| A．as | B．while | C．when | D．Suddenly |
Every Monday, my English teacher would cheerfully ask me _______ my weekend had been.
| A．that | B．if | C．what | D．how |
---The zookeeper was really annoyed with me.
--- How could he have been if you _______ stones at the animals?
| A．didn’t throw |
| B．don’t throw |
| C．hadn’t thrown |
| D．haven’t thrown |
---Do I have to bring my camera tomorrow afternoon?
---I think so．We _______ the Botanical Garden then.
| A．will be visiting |
| B．are visiting |
| C．have visited |
| D．visit |
We have an adviser on hand in this activity _______ you have any worries or problems.
| A．when | B．now that |
| C．though | D．in case |
The spread of the Ebola virus in Nigeria is believed _______ by August, 2014.
| A．to be controlled |
| B．to have been controlled |
| C．to control |
| D．to have controlled |