A few __________ looked at him curiously when he suddenly stopped and burst out crying.
A.passers-by | B.passer-bys |
C.passers-bys | D.passer-by |
We shall go ____ you are ready.
A.while | B.as soon as | C.as | D.since |
Mark was a student at this university from 1999 to 2003, ____ , he studied very hard and was made Chairman of the Students' Union.
A.during which time | B.for which time | C.during whose time | D.by that time |
It has not been decided ____ they will leave.
A.why | B.when | C.which | D.what |
The accident is reported to have occurred __________ the first Sunday in February.
A.at | B.on | C.in | D.to |
The trouble is ____ we can not find such an expert.
A.why | B.that | C.where | D./ |