The girl is only two years old. You can’t leave her ____________.
—____ do you usually come to school? —By bike. A. How B. What C. How often
—What do you usually do _____ weekdays after school?—I usually read books. A. in B. at C. on
The boy likes playing _____ basketball very much. A. a B. an C. /
Mary said she ______ to school the next Sunday.
If he ________ harder, he’ll catch up with us.