We don't (be not sure if something is true)the great achievements China has made in the past 40 years.
What a fine day today! Let's go for a (野餐).
We will hold a party to say goodbye to our teachers next (星期三).
Every time I want to give up, my parents always (鼓励)me to keep trying.
The cinema was half (空的) because the movie was so boring.
Bob and Jim have been good friends (自从) they joined the same tennis team.