We cannot figure out ______ quite a number of students were infected with the flu.
My sister, an inexperienced rider, was found sitting on the bicycleto balance it.
According to the air traffic rules, youswitch off your mobile phone before bearding.
In my view, London's not as expensive in price as Tokyo but Tokyo is______in traffic.
The two sportsmen congratulated each otherwinning the match by shaking hands.
Last night Mr. Crook didn’t come back at the usual time. __________ , he met some friends and stayed out until midnight.