Although he is only 14 years old, he __________drugs for two years.
| A．addicts | B．has addicted to | C．has addicted | D．has been addicted to. |
Reaching this agreement so quickly was a great____ for the meeting.
| A．appointment | B．access | C．achievement | D．approach |
Though having lived abroad for years, many Chinese still _____ the traditional customs.
| A．perform | B．possess | C．observe | D．support |
When such an organised group became too large for its members to travel together comfortably, it would ______.
| A．hurry up | B．split up | C．make up | D．pick up |
By the time Jack returned home from England, his son _____from college.
| A．graduated | B．has graduated | C．had been | D．had graduated |
Those successful deaf dancers think that dancing is an activity _____ sight matters more than hearing.
| A．when | B．whose | C．which | D．where |