The earlier settlers learned to farm the land through ______ and error.
| A．test |
| B．trial |
| C．experiment |
| D．try |
It is playing computer games _______ the boy spends most of his spare time.
| A．that | B．which | C．when | D．how |
---What's he size of the smaller one?
---It's _______.
| A．half bigger | B．half as big | C．as half big | D．half the same |
---Why isn't he in the hospital with his injured mother?
---No one ______ him of the accident.
| A．informed | B．informs | C．had informed | D．has informed |
---When will you be back?
---________.We'll meet at the end of the month.
| A．About two weeks | B．Every two weeks | C．In two weeks | D．For two weeks |
Let's ready to foot it ________there're neither buses nor taxies.
| A．though | B．since | C．while | D．if |