______ we'll go to the Huaguo Hill.
— Would you like to go hiking with us?— ________. I’m preparing for the coming exams.
— Excuse me, could you tell me ________ to fly to Guilin?— About two hours.
The boy isn’t old enough ________ with the difficult problem by himself.
Not only Susan but also Sandy _________ abroad for traveling. They will return next Sunday.
— _________ has Liu Xiang taken part in world’s competitions of 110-metre hurdles?— I’ve no idea. Let’s find it out on the Internet.