. Words ______ me when I wanted to express my thanks to him for having saved my son from the burning house.
| A．left | B．discouraged | C．disappointed | D．failed |
Evidence gained from observation and experiment is often used to _______ a scientific theory.
| A．concern | B．confirm | C．consult | D．combine |
_______ be sent to work there?
| A．Do you suggest who should | B．Who do you suggest that should |
| C．Who do you suggest | D．Do you suggest whom should |
—That must have been a long trip.
—Yeah, it _____ us a whole week to get there.
| A．takes | B．has taken | C．took | D．was taking |
Between the two parts of the concert is an interval, _____ the audience can buy ice-cream.
| A．when | B．where | C．that | D．which |
He decided that he would drive all the way home instead of _____at a hotel for the night .
| A．putting down | B．putting off | C．putting on | D．putting up |