Knowing how long the test would last, the students who finished _______ back and waited until the end of the exam.
A. settle B. settled C. settling D. to settle
I thought things would get better, but _______ it is they are getting worse.
A. before B. because C. as D. after
The dull wetland _______ the moment the first ray of sunlight shines on it. Thousands of creatures living in it wake up and begin their life of a new day.
A. stays alive B. begins to live C. makes a living D. comes to life
Experts say walking is one of the best ways for a person to _______ healthy.
A. handle B. stay C. maintain D. reserve
_______ unexpected heavy rain usually causes _______ great change.
A. The; the B. An; 不填 C. An; the D. The; a
---It’s getting late. I am afraid I must be off now.
---_______!
A. Go slowly B. So long C. No problem D. All right
