—What _______ he do last night?—He _______ out with his friends.
It’s not safe(安全的) for an ________ child to swim in the river.
He really likes English and often ______ English after class.
There are ______ students in our school.
There ______ a bank and two pay phones near here.
—How far is it from your home to school? ─It’s fifteen ______ walk.