Beijing has ________ many buses that there is often a traffic jam in rush hours.
| A．so | B．very | C．too | D．much |
—________ will your father be back?
—My father will be back in half an hour.
| A．How long | B．How soon | C．How often | D．How far |
Old people should ________politely.
| A．be spoken to | B．speak | C．speak to | D．to be spoken |
—What happened ________Sarah?
—She failed in the English test.
| A．to | B．with | C．in | D．on |
Several ________ students came to the meeting.
| A．thousand | B．thousands | C．thousand of | D．thousands of |
This book is ________for a six-year-old child to read.
| A．enough easy | B．enough easily | C．easy enough | D．easily enough |