_______ did you sing last night—-About two hours.

I have got a backache.— That’s not surprisingYou ______ in front of that computer too long

ou go by train, please see toit_______ you take an express, _______ that stops only at big stations.

ritain has agreed to join the China-led international development bank – Asian Infrastructure Investment Bank , German and Italy will follow suit.

This kind of paper ______ nice and soft．