She would move quietly up to the sparrow on a small tree just to get a better look, her face __________ with childlike expressions at one of God’s simple wonders.
Cars, buses and bikes ________ stop when the traffic lights turn red.
_______ we got to the station, the train had left already.
Tom kept quiet about the accident _____ lose his job.
He is very old, ______ he still works very hard.
I rang you several times yesterday but couldn’t ______.