—Hurry up! The bus is coming.—Wait a minute. Don’t cross the street ____________the traffic lights are green.
Though I like the house very much, its price _________ my ability to pay.
The Forbidden City was _________ a museum in 1925.
Mr Zhang is a kind teacher. He devotes much of his time _________ us with English.
My father often encourages me _________ English reading.
The sports meeting will be covered _________ tonight.