Many children，______ parents are away working in big cities，are taken good care of in the village.
| A．their | B．whose | C．of them | D．with whom |
Nicotine is___only half a year after you begin smoking
| A．in force |
| B．by force |
| C．by the force of |
| D．of no force |
As is so often pointed out,knowledge is a two-edged sword which can be used____for good or evil
| A．similarly |
| B．widely |
| C．equally |
| D．properly |
—We’ve spent too much time money recently
—Well,it isn’t surprising.Our friends and relatives ___around all the time
| A．are coming |
| B．had come |
| C．were coming |
| D．have been coming |
—Were you surprised by the ending of the film?
—No.I___the book,so I already knew the story
| A．was reading |
| B．had read |
| C．am reading |
| D．have read |
—Peter,where did you guys go for the summer vacation?
—We___busy with our work for months,so we went to the beach to relax ourselves
| A．were |
| B．have been |
| C．had been |
| D．will be |