People are living in_______ world where mouse clicks rule our life, so online searches have become_______ must.
| A．the; / | B．/; a | C．a; a | D．a; the |
In my opinion, he is a(n) ________ person, that is, he says what he thinks.
| A．modest | B．respectful |
| C．outspoken | D．easygoing |
Only after Mary read her composition the second time________ the spelling mistake.
| A．she noticed | B．she has noticed |
| C．did she notice | D．does she notice |
Most people think that it is ________ to spend some time surfing the Internet, but we shouldn't be too dependent on it.
| A．worth | B．worthwhile |
| C．worth of | D．worthy of |
—What happened over there?
—They argued ________ the waiter ________ the price of the meal.
| A．to; for | B．against; over |
| C．for; at | D．with; about |
Before my father moved off, he told me again and again that I should ________ the rules and regulations of the school.
| A．make | B．watch |
| C．remain | D．observe |