It was the first time in two years that I________ my youngest son face to face.
| A．have seen | B．had seen | C．saw | D．see |
.One or perhaps more pages _______.
| A．is missing | B．has been missed | C．are missing | D．was missing |
.More than one worker ______ dismissed.
| A．have been | B．are | C．has been | D．Has |
.Many a student ______ the importance of learning a foreign language.
| A．have realized | B．has realize | C．have been realized | D．has been realized |
.The gas works ______ near the city.
| A．is | B．are | C．were | D．Be |
.The surroundings of his house ______ clean now.
| A．is | B．are | C．was | D．Were |