一、选择题
l. Boys and girls, keep calm and be confident. I am sure all of you are __________ excellent students.
A. an B. a C. /
2. Don't stay inside _______such a sunny morning. Let's go out to enjoy the gentle wind and the s weet flowers.
A. on B. in C. from
3. —The temperature is 30^C today. I prefer staying in to going out.
—It will be _______ tomorrow. The temperature will reach 35^C.
A. colder . B. hotter C. hottest
4. As middle school stud ents, we should ______ to protecting our school environment.
A. make a contribution B. make a decision C. make progress
