Though _______ to see us, the professor gave us a warm welcome.
__________ the traffic jam, he arrived on time.
Faced with financial uncertainty, the family decided to____ their trip to Europe to save money.
—How about going out for a picnic on Sunday morning? —Hmm.___.The weather is very good these days.
Years ago we didn’t know this , but recent science______that people who don’t sleep well soon get ill.
.It is said that the early European playing-cards ______for entertainment and education.