Private cars are required to take turns off roads one out of five weekdays ____the
traffic pressure.
| A．to reduce | B．reducing |
| C．reduce | D．reduced |
A storm buried Illinois under several inches of snow on Tuesday,______at least 100 people dead in traffic accidents.
| A．to leave | B．leave | C．left | D．leaving |
— Do you like the book you father bought you?
— Very much. It’s exactly______I wanted.
| A．which | B．that | C．what | D．how |
Is this______first time you’ve flown on_______British Airways?
| A．the;不填 | B．the; a |
| C．a; the | D．不填；a |
“Please remain______until the airplane comes to a complete stop.” said the stewardess.
| A．seating | B．seat | C．seated | D．to seat |
—Why are you so busy these days?
— We_____trees. Why not join us？
| A．have planted | B．will plant |
| C．are planting | D．planted |