— So you missed the meeting．— ______. I got there five minutes before it finished.

As is often the case, the fact that something is cheap doesn’t _____ mean it’s of low quality.

The earth could be younger and took more than three times longer to form than _______ thought, according to a new study.

In the keen competition of this international tennis tournament, she ________ won the championship.

Such a problem is＿＿＿＿difficult for a primary school student ＿＿＿.