—Hi,Jack! Where_________ you ______ these days?—I _________ Beijing for about 2 weeks.
I’ll show you a store_____ you may buy all _____ you need.
I meant to help him . ______, he didn’t accept my offer.
Several months later, he found his deskmate very difficult _______.
In order to make up for the lost time, they are working ______.
She used ______ on the right in China, so she was not used _______ on the left in England at first.