--Did Mary come to your birthday party?
--No. I __________ her, but she was away on business.
| A．would like to invite | B．would have liked to invite |
| C．must have invited | D．could invite |
Not until Betty got to the airport _____ she had lost her tickets.
| A．that she realized | B．did she realize | C．where she realized | D．she realized |
____ has been proved again and again that ____ is said in the ads greatly affects people’s impression of the products.
| A．There; what | B．There; that | C．It; which | D．It; what |
_____ no spare parts, the equipment could not be repaired at once.
| A．There being | B．There having | C．Being | D．There was |
We all suggest that she _____ at the weekend, because her pale face suggests that she _____ in bad condition.
| A．does not work; is | B．cannot work; was | C．not worked; was | D．not work; is |
In my opinion, both teachers and parents should ____ the students from playing computer games so much, which affects their studies and health.
| A．benefit | B．protect | C．discourage | D．encourage |