He tries_____ English well, so he practises _______English every day.
—______ is this?—It's yellow.
There is a police car _____ the bus. The police are watching the traffic.
—Lily, here are your pens. Please _____. —OK, Mom.
—_____ do you have an art lesson? —Four times a month.
—You should ______ carefulin your work and life every day. —You’re right.