It was three weeks later ____ he heard the news.A which B that C after D when

A.three days

B.three weeks

C.three months ago

A. During three weeks

B. since three weeks

C. three weeks ago

D. for three weeks

The train()just three weeks() complete a journey that()six weeks by sea.

A. spent…on; takes in to

B. pay…for; takes on to

C. took…to; takes up to

They had only _________ in that house for three weeks when fire destroyed it.

A、been lived

B、lived

C、living

D、to live

It’s three weeks since he took the medicine, but the medicine doesn’t seem to _____.

A、affect

B、effect

C、work

D、make

● A line manager provides you with three estimates for his activity in your PERT network. His estimates are 2 weeks optimistically, 4 weeks most likely, and 12 weeks pessimistically. The expected time which would appear on the chart would be:

A 4 weeks

B 5 weeks

C 6 weeks

D 7 weeks

E None of the above.