If during discharging the Captain for fear of vessel being frozen in deems it advisable to

A.from

B.in

C.at

D.during

A.across

B. in

C. throughout

D. during

A.during the rest time

B.during the working hours

C.during the dinner time

D.

E.during the holidays

A good tour guide tells visitors().

A. What they couldn't miss during the trip

B. What during the trip they couldn't miss

C. What couldn't miss they during the trip

The period of Stone Age is during 2000--250BC.()

The students’ phone offers its service_______

A．every morning during the work-days

B．every morning during the work—ends

C．four mornings a week

D．every other morning except Sunday

— When do we have to pay the bill？

—____ December 30.

A、By

B、In

C、During

Please take care of my garden during my ______ . (absent)