“How long have you worked on the farm?” “_________ the end of last year.”
| A．In | B．By | C．At | D．Since |
The chairman thought ________ necessary to invite Professor Smith to speak at the meeting.
| A．that | B．this | C．it | D．him |
All day long， by the side of the road ______， looking at the passing cars and people.
| A．was he sitting | B．sat he | C．did he sit | D．he sat |
Eating too much fat can ______ heart trouble and cause high blood pressure.
| A．result from | B．attend to | C．contribute to | D．devote to |
It is always those ________ forgive first ________ achieve more happiness.
| A．不填; that | B．who; and | C．who; that | D．that; but |
—Why are you staring at me?
—You look stupid! The way you wear is ______ annoys me most.
| A．what | B．where | C．how | D．which |