The teachers hope students can keep a ________ between work and relaxation.
A．promise B．lead
C．balance D．diary
I'll be busy on ________ Sunday morning, and perhaps I'll have ________ late night.
A．the; a B．/; a
C．/; the D．the; /
It is high time that we started to consider what ________ we should take to reduce heavy smog caused by traffic fumes and other pollutions.
A．affection B．attention
C．measures D．advantages
________ walk is expected to last all day, so bring ________ packed lunch.
A．A; a B．The; /
C．The; a D．A; /
In recent years, many mainland residents have rushed to Hong Kong to buy baby milk powder due to their ________ about its quality.
A．anxiety B．curiosity
C．generosity D．attention
One hundred thousand years ago, ________ choice was simple when it came to ________ drink—there was no choice. It was water or nothing.
A．the；a B． a；不填
C．the；不填 D．a；the
