看到你的词汇量在逐渐增长我很高兴。I’m very glad to see that your vocabulary is ______ ______.
Either the guides or the team leader ________ looking after the students then.
When _______ comes to advertisements, we must all use our intelligence.
As they were walking around, they noticed a man _______ against a tree.
Today, when scientists examine mummies, they wear special clothing for protection _____ they breathe in harmful gas.
Wow! That’s Uncle Sam. Now he’s in Paris, _____ he?