Macao(澳门) returned to China in 1999. She back for more than fifteen years.A. came B. has come C. has been
—_____ do you have an art lesson? —Four times a month.
—You should ______ carefulin your work and life every day. —You’re right.
—_____ do you _____ English? —I like it very much.
—Which bus do I need _____? —Bus No. 818.
The sign means “ _____”.