The place _____ the bridge is supposed to be built should be _____ the cross-river traffic is heaviest.
These foreign teachers say they will go ________ they are needed to teach English after they arrive in China.
It wasn’t long _______ the two daughters of President Obama got used to the life in the White HouseA that B before C until D and
that Marie was able to set up new branches elsewhere.
My parents live in a small village. They always keep candles in the house_____there is a power out.
Leave your key with a neighbor _______ you lock yourself out one day.