Now people have come to realize ________ harmful pollution is.

Is the project difficult for the students—No. Most of the relevant information ______ to them.

y an adult man cangrow about 17 meters tall, _____ a few may grow as short as 13 meters

I’m sorry I didn’t attend your birthdayparty because my mother was ill– ________ Is your mother better now

Only when he reached the tea-house________it was the same place he’d been in last year