By the time I graduate from university, I ___ (be) a student for 15 years.

It must be admitted that a good deal of dissatisfaction is reflected in those report.

B)必须承认，这些报道反应了很多不满情绪。

C)我们必须承认，这些报道确实反应了很多潜在的不满情绪。

D)这些报道反映出很多不满情绪的这个事实是应该被承认的。

The general placed the flag over the captain, leaving only his face (uncover) _____.

A passport is a document (issue) ____ by a country to its citizens that permits them to leave and re-enter the country.

Computers have brought us a (revolution) _____ way of working.

Motor cyclists should wear helmets to shield them from injury.

B)摩托车手应戴上头盔，保护他们远离伤害。

c)摩托车手应戴上头盔，保护自己免受伤害。

D)摩托车手应戴头盔，保护自己可远离伤害。