How long does a snake sleep? It ______ for eighteen ______ a day. A. sleep, hour B. sleeps, hours C. slept, hours
This is Tony's _______ visit to Jinan. He has been here once before.
--- Would you please take this workbook to the teacher's office for me? — ________.
It is a world of flowers in spring in Dongying.You can see flowers______
—The meeting _______ because of the fog in Northern China last week. — Oh, it’s too bad! We should take action to improve the air quality.
_______terrible weather we’ve been having these days! A How a B What a C How D What