They will pay a visit to Europe in a couple of years _____ they have enough money

Mary failed the driving test again．If she ________ harder, she ________ the test easily．

Chris, please ________ a meeting with Mr. Du for me this evening who came back from Canada yesterday.

Who is the man over there Is it Mr Li—No, it ______ be him. Mr Li has gone to America.

There is a tradition of having a family dinner at home on lunar New Year’s Eve _____, however, the custom has changed