主谓一致. On entering the room, we saw one and a half apples ________ left on the table.
He was inspired to start again _________ he had failed.
–She looks very happy. She ________have passed the exam. --I guess so. It’s not difficult after all.
The Australian boy has a good __________ of Chinese and can express himself freely in it.
Be ___________ ---you can’t expect me to finish all this work in so little time.
—Do you like working as a waiter? —Yes, but I get tired ______ standing the whole day.