I have two elder brothers, ____ in the army for ten years.
| A．the elder of whom served |
| B．the older having served |
| C．the older of which served |
| D．the elder one has served |
People______better access to health care than they used to,and they're living longer as result.
| A． |
will have |
| B． |
have |
| C． |
had |
| D． |
had had |
Jim has retired, but he still remember the happy time _______ with his students.
| A． |
to spend |
B． |
spend |
C． |
spending |
D． |
spent |
The little problems ______ we meet in our daily lives may be inspirations for great inventions.
| A． |
that |
B． |
as |
C． |
where |
D． |
when |
The national park has a large collection of wildlife, _________ from butterflies to elephants.
| A． |
ranging |
B． |
range |
C． |
to range |
D． |
ranged |
In the 1950s in the USA, most families had just one phone at home, and wireless phones _______ yet.
| A． |
haven't invented |
B． |
haven't been invented |
| C． |
hadn't invented |
D． |
hadn't been invented |