This is a very special flower and it can ________a strong sweet perfume at night.

The engineer has spent one year working in the US and discovered how things ________overseas.

In the 21^st century, all nations must take their ________of responsibility for the global safety.

Marry is no different from any other teenage girl, but she has given enough thought __________ her future career.

—Drinking tea is a common practice in daily life, isn’t it?
—Yes, teahouses continue to __________up in and around the city of Nanjing.

We are supposed to __________newspapers, magazines and other related books when writing a report.

Taking notes is important in class, but it is not necessary to __________every word the teacher says.

Both Class 3 and our class won't be able to finish the work unless they ___ each other.

Why ____ to go abroad to study when there are so many good universities at home?

Both Class 3 and our class won't be able to finish the work unless they ___ each other.