Great changes ___ in the past ten years in China.
| A．took place | B．have taken place |
| C．were taking place | D．had taken place |
________Hard you may try, you can’t possibly persuade Tom to give up smoking, for he is so addicted to it.
| A．Whatever | B．However | C．Whichever | D．Whenever |
Every year, Tom remembers to have some flowers ______to her mother on her birthday.
| A．send | B．sent | C．sending | D．being sent |
It’s not easy to learn English well. _______as much as possible is necessary.
| A．Having read | B．Read | C．Reading | D．To have read |
－Peter, would you like a beer to go with your meal?
—Sure, it___________.
| A．ordered | B．was oredred | C．has been ordered | D．has ordered |
Oct.1st, _________is our National Day, is always celebrated with singing and dancig.
| A．as | B．that | C．when | D．which |