Unluckily, a car accident _____ on this road last week.
If you are weak _____ a subject, ______ and asking a teacher for advice can help.
Dear students, please read every sentence carefully. ______ you are, ________ mistakes you’ll make.
Who teaches ___ English?No one. I teach _____.
____ mothers can’t go to the meeting, because they have gone to Beijing.
It’s an important decision for you, so______ your time and think it over.