______is unhealthy for us to go to school without eating breakfast in the morning． （ ）
A．ThatB．ThisC．It
By the time Dave reached the small boat, a thick white fog _______ over the surface of the water.
| A．spread | B．has spread |
| C．had spread | D．was spreading |
The teacher told the kids that light ________ faster than sound.
| A．traveled | B．had traveled |
| C．is traveling | D．travels |
He said that his car ______ stolen and he _______ have to telephone the police.
| A．was; would | B．has been; will |
| C．had been; would | D．had been; will |
The English teacher told us this morning that we _____ an exam at the end of this month.
| A．will have | B．would have |
| C．have had | D．had had |
(2014)A lot of books to the poor students in the countryside last year.
| A．send | B．were sent |
| C．sent | D．are sent |