30.They ______ be at home. You see, the door is locked from the outside.
| A．can’t | B．may | C． must | D． mustn’t |
—You didn’t wait for Mr. Smith last night, did you?
—No, but we ______. He didn’t return home at all.
| A．needn’t have waited |
| B．couldn’t have waited |
| C．didn’t need to |
| D．should wait |
The teacher simplified the reading materials, ______ it easy for the students to read.
| A．making | B．having made | C．to make | D．made |
The Los Angeles Times _________ a wide circulation in that city and that people each _________ a copy on the subway is a common occurrence.
| A．has; reads | B．have; read |
| C．has; read | D．have; reads |
Of all the Sony earphones, Maggie preferred the blue pair and paid for it with the _________.
| A．50 euros remained | B．50 euros that remaining |
| C．remaining 50 euros | D．remained 50 euros |
Uber (优步) is the easiest way to connect you with a driver_________ the tap of a button. In terms of price and convenience, it is second _________ none.
| A．with; against | B．at; to |
| C．through; for | D．by; beyond |