Many scientists believe that the universe began with an enormous explosion called the “Big Bang”, ______ happened about 13.7 billion years ago.
A．that B．which C．when D．what
—Don’t forget to visit me when you come to Beijing.
—______.
A．I don’t B．I won’t C．I can’t D．I haven’t
—Your mother becomes more and more forgetful.
—Yes. She searched for her cellphone for a whole day last Sunday but it ______ in her coat pocket the next day.
A．turned out B．turned on C．turned over D．turned up
Would any one of you please tell me ______ to the railway station?
A．how far is it B．how far it is
C．how far is D．how far
The company was named Gates Hall ______ a man named James Gates.
A．in need of B．in search of C．with the help of D．in memory of
When we were young, every evening my brother and I ______ stay at home waiting for our mother.
A．would B．might C．should D．could
