-- Could you be so kind as to close the window?
-----__________________.
| A．With pleasure | B．Go ahead | C．Yes, please | D．That's OK |
Internet shopping will really _____ when people believe that it is safe.
| A．take off | B．take up | C．get off | D．get up |
Some students found _____ hard to study English well .
| A．this | B．it | C．that | D．which |
I hear a number of workers in the factory _____ out of work and the number of them ______ quite large .
| A． are , is | B．is , are | C．is , is | D．are, are |
You look so curious (好奇) about Beijing .Is this the first time that you _____ here ?
| A．came | B．have come | C．had come | D．are coming |
Is it on September 1st _____ students come back to school every year ?
| A．when | B．that | C．which | D．who |