_______ the teacher’s instruction in the lab_____ important.
| A．Following; are | B．Following; is | C．Followed by; are | D．To follow; are |
Brave New World describes a terrifying future _________ there is no war or
violence and all the people can live happily.
| A．where | B．which | C．that | D．whom |
Once a computer is put into water, the system _______ and cannot repair itself.
| A．breaks down | B．breaks through | C．breaks out | D．breaks up |
________ 18 June 1940, Churchill gave another fine speech when he drew attention ________ the courage of everyone defending Britain.
| A．In, for | B．At, within | C．Beyond, at | D．On, to |
The situation at Omaha Beach was so bad _______ the soldiers succeeded in
landing on the beach with a lot of people losing their lives.
| A．that | B．enough | C．when | D．once |
_______ it two days ago when you arrived home late that you came across her?
| A．Did | B．Was | C．Does | D．Is |