It took me _ to chat with my parents last night.

It took me _ to chat with my parents last night.
1.—Which gate shall we go through?—_.
A.The 4 gate B.4 gate C.Gate 4 D.The gate 4.
2.The plane to Beijing will take off _.
A.in quarter past six B.in a quarter past six C.at quarter past six D.at a quarter past six
3.They have worked together for about _.
A.a year and half B.a year with half C.a year and a half D.a year with a half
4._ of the workers in this factory is about five hunderd._ of them are women.
A.the number;two-third B.a number;two-third C.the number;two-thirds D.a number;two-thirds
上面还有一题
选项：
one and half hours B.one and half hour
C.one and a half hour D.one and a half hours