In 1800s, a group of adventurers(探险家) ______ on their exploring trip. Five days later, they came to what is now known as Quebec.
| A．set up | B．set down | C．set about | D．set out |
Distinguished guests and friends, welcome to our school, _____the ceremony of the 50th Anniversary this morning are our alumni （校友） from home and abroad.
| A．Attend | B．To attend | C．Attending | D．Having attended |
__ unemployment and crime are high, it can be assumed that the latter is due to the former.
| A．Before | B．Where | C．Unless | D．Until |
This special school accepts all disabled students, __ educational level and background.
| A．according to | B．regardless of | C．in addition to | D．in terms of |
--- Bill, can I get you anything to drink?
--- .
| A．You are welcome | B．No problem |
| C．I wouldn't mind a coffee | D．Doesn’t matter |
He did not regret saying what he did but felt that he ______ it differently.
| A．could express | B．would express |
| C．could have expressed | D．must have expressed |