In some places women are expected to earn money ________ men work at home and raise their children.
A．but B．while
C．because D．though
________ the fire breaks out，he is the first to arrive at the scene.
A．Every time when B．Moment
C．No matter whenever D．Every time
—What do you think I should wear for such a formal press conference?
—Dress ________ you like.
A．how B．what
C．whatever D．however
—Someone wants you on the phone.
—________ nobody knows I am here.
A．Although B．And
C．But D．So
We had to be patient because it ________ some time ________ we got the full results.
A．has been；since B．had been；until
C．was；after D．would be；before
He was so deep in thought，thinking of the problem ________ he knocked into the tree without noticing it.
A．when B．while
C．because D．that
