[ Grammar ]
While we were having a picnic, _____ to rain.
A. start to
B. starting to
C. is starting
D. start

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Adjective › View
a.busy
b.difficult
c.sleepy
d.heavy
Grammar › View
What does a scientist do?
She ____________________.
A. do experiments
B. does experiments
C. flies experiments
D. takes care of experiments
. Liza usually … at 6 am and … to bed at 11 pm.
A. gets up; is going
B. gets up; goes
C. got up; goes
Grammar › View
She asked me whether I_________that day.
A. leave
B. left
C. was leaving
D. had left
