Edward, you play so wellBut I __________ you played the piano

The best times to visit Shangri-la are spring and autumn ___ the temperature is at its mildest.

My parents are ______ famous writers.

You needn’t have ________ the speaker when he was speaking; there was enough time afterwards for you to ask questions.

I haven’t been to Shanghai for years. — No way, you really need topay a visit there, and you’ll find changes there are _____ imagination.