Evidence has been found through years of study ________ children’s early sleeping problems are likely to continue when they grow up.
| A．why |
| B．how |
| C．whether |
| D．that |
As we all know, it is usually cold in this place in January, but it _____ be warm sometimes.
| A．must | B．can | C．should | D．would |
40 kilometers _____ Chengdu lies a town, _____ suffered great losses in the earthquake, but is now on the road to recovering.
| A．west of; which | B．on the west in; where |
| C．west of; where | D．on the west of; which |
—My son is addicted to drugs. He isn’t hopeless, is he?
—Yes, _____ he mends his ways and starts all over.
| A．if | B．when | C．even if | D．unless |
Look at the pride on Tom’s face. He _____to have been praised by the manager just now.
| A．seemed | B．seems | C．had seemed | D．is seeming |
The machine _____ . It hasn’t worked for years and no one wants to repair it.
| A．didn’t work | B．wasn’t working |
| C．doesn’t work | D．isn’t working |