We arranged to meet at the cinema at 7:30, but he failed to _________.
| A．turn down | B．turn off | C．turn over | D．turn up |
Science fiction writers often write about _______will happen in “tomorrow’s world”.
| A．why | B．that | C．what | D．how |
Medicine and food ________ to the flood areas soon.
| A．send | B．was sent |
| C．will send | D．will be sent |
When _______ comes to advertisements, we must all use our intelligence.
| A．that | B．it | C．there | D．this |
________ he found the idea interesting, it was too difficult to be of practical use.
| A．While | B．Once | C．If | D．Until |
As they were walking around, they noticed a man _______ against a tree.
| A．sit | B．to sit | C．sitting | D．sat |