t it verydifficult to carry on the work all by myself. —Icould have helped you, but you _____me to.

The advertisement says the vacuum cleaner (吸尘器) can ______ everything from the floor. Do you believe it?

Too much drinking will do________to your health；you should take the doctor’s advice.

It is not when to start the job but who to start ______is of importance.

,____ country in Central America, isthe only place in the world ____ someone can see the sun rise on the PacificOcean and set on the Atlantic