Babies’ health is much more likely to be affected if______ parent smokes．
| A．both | B．none | C．neither | D．either |
.
________ as one, the people of that country eventually drove the invaders (侵略者)out of their country.
| A．Linked | B．Combined | C．Joined | D．United |
.
Allow children the space to express their opinions ________ they are different from your own.
| A．until | B．even if | C．unless | D．before |
.
Thousands of athletes______ in many countries will compete _______ medals in the 2008 Olympic Games in Beijing.
| A．involved; in | B．involving; by |
| C．to involve; against | D．involved; for |
.
Would you like to ______ us? We are going to _____ the school’s 20th anniversary celebration.
| A．join in; take part in | B．join in; join |
| C．take part in; join | D．join; take part in |
.
The audience was _____ very young children so there was a lot of noise while the concert was going on.
| A．consisted in | B．made up for | C．consisted of | D．made up of |