—What’s Jack up to in the shoe shop? He’s there for ages.—It’s ______ that he hasn’t decided which pair to buy.
If the motorbike driver had slowed down when he turned, the accident could have been _____.
Some farmers are no longer _____ with two harvests per year; they are now striving for three.
None of us expected Mr.Johnson to _____ at the party.We thought he was still abroad.
Be careful when you surf the Internet.If you download a virus into your computer ______, you will not open your files.
The news that Shenzhou VII returned to the earth successfully _____ throughout the country.