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A. to install B. installing

C. having installed D. installed

【題目】He________the club and________a lot of its activities in his spare time.
A.took part in；joined
B.joined；took part in
C.joined；took a part in
D.took part in; took part in

A. occurred it B. it did occur

C. it occurred D. did it occur

A. to be limited B. limiting

C. to limit D. limited

A．they actually broke B．do they actually break

C．did they actually break D．they had actually broken

A. That B. What

C. Who D. Which

【題目】—I don't think we have met before.
—Yes, once at a party, but we________．
A.weren't introduced
B.didn't introduce
C.haven't introduced
D.were not introducing

A. cut off B. cut down

C. cut out D. cut back

---No. For example, he said he would show me around his school, and _______ .

A. so would he B. so did he

C. so he would D. so he did

【題目】The microphone enabled them to keep in touch，________—it made it convenient for them to contact each other.
A.as well
B.in fact
C.in other words
D.as a result