If the weather had been better, we could have had a picnic. But it ____ all day.
| A．rained | B．rains | C．has rained | D．is raining |
You ____ television. Why not do something more active?
| A． always watch | B． are always watching |
| C． have always watched | D． have always been watching |
Turn on the television or open a magazine and you ________ advertisements showing happy families.
| A．will often see | B．often see |
| C．are often seeing | D．have often seen |
The detective, ________ to read a newspaper, glanced at the man ________ next to a woman.
| A．pretending; seat | B．pretending; seated | C．pretended; seat | D．pretended; seated |
At first, they worried about the situation but things ______quite well.
| A．went on | B．carried on | C．worked out | D．tried on |
Only when our country has aircraft carriers _______ our distant islands more effectively.
| A．we can guard | B．can we guard | C．we guard | D．do we guard |