Mr. Green stood up in defense of the 16-year-old boy, sayingthat he was not the one _______.

Look! Here is a message on my mobile phone, asking meto send money to….—Don’t believe it! It’s a trick. More than one person_____ by such tricks so far.

What were you doing when the earthquake happened in Jianhe —I morning exercises.

His success was because of ________he had been working hard.

It’s important for us to ______ a word or a phrase according to the situation in language studies.[ ]