He _______ have completed his work；otherwise, he wouldn’t be enjoying himself by the seaside.
| A．should | B．must |
| C．wouldn’t | D．can’t |
I can't remembermade the teacher give Mary the permission to leave the class earlier．
| A．that it was what | B．that was it what |
| C．what was it that | D．what it was that |
On their journey, they meet fellow adults in their 20s and 30slives haven' t lived up to their dreams．
| A．who | B．whose | C．when | D．that |
I'm not a little tired today after giving the room a thorough cleaning and I have never hadtoday．
| A．as tiring a day as | B．as a tiring day |
| C．tiring as a day as | D．day as a tiring as |
—I wonder what makes you a good salesperson．
—Ias a waiter for three years，which contributes a lot to my today's work．
| A．serve | B．have served |
| C．had served | D．served |
I waited for him at the train station for an hour and I was afraid that he may miss the train, but luckily, he showed up with only ten minutes．
| A．remain | B．to remain |
| C．remained | D．remaining |