The patient’s progress was very encouraging as he could ________ get out of bed without help.
Was it 80 years before Christopher Columbus crossed the Atlantic ______ Zheng He hadsailed to East Africa?
Time should be made use ______ meaningful things.
Last night, your mobile phone was always busy. I couldn’t ______ to you after several attempts.
At this time next year______ our holiday in Beijing..
—Would you like to come to my house to watch the Voice of China together? —______.