____paragraph is a group of sentences about some related subject. Readers must know what the main idea of ___paragaph is in order to understand ___information they are reading.
----Smoking is bad for your health. ---- Yes, I know. But I simply can’t ______.
.I don’t think that the sentence need ______again.
Five athletes competed_____ the gold medal _____ each other _____ the 100-meter dash.
Look at the timetable. Hurry up! Flight 4026 ______ off at 18:20.
The Dragon Boat Festival _____ the beginning of the hottest season of the year.