—Did you enjoy meeting your old schoolmates at the party last week?—Yes, I did. We ________ each other since we graduated from college.
Usually pilots need about a decade of experience _______ they can be promoted to captain.
Riding on the swings and playing with the ducks in the pond _____ our children’s greatest pleasures when we took them to the park.
Please make sure that no details _____ before you deliver a speech.
Passengers _____ fasten their seat belts immediately after taking their seats. The belts should remain buckled during the flight whether or not the “fasten seat belt” light is on.
As _____ city with rich culture, Shanghai is ______ home to a number of artists who are determined to establish their own style.