Scientists study ___________ human brains work to make computer.

---Why were you late for school today?
----It was ________ I help catch a thief on the bus.

It suddenly occurred to him _____ he had left his keys in the office.

I don’t believe we’ve met before, ________ I must say you do look familiar.

These two areas are similar ________ they both have a high rainfall during this season.

Mike resembles his mother in appearance _____ his personality follows his father's.

______I went to Guiling,I was fascinated by its natural scenery.

Father was late for work     the traffic jam, and     ,the boss blamed him for it.

—— Oh, it’s raining hard outside. Mum, do you think the milkman will come?
—— Of course. He will come on time _____it rains.

—How long have you been working as an assistant here?
—__________I finished middle school.