—Do you think that housing price will keep _____ in the years to come?  —Sorry, I have no idea.

She __ the table and said the dinner was ready.

Students learning ability shouldn’t be ___ only by examination results.

To be able to catch up with the other students, he needs ___ hard work; he needs your encouragement, too.

The scientists are able to ____________ accurately when the spaceship will reach the moon.