He paid for a seat, when he _____ have entered free.
A. could B would C. must D. need
—What do you think of their new house?
—It’s very modern，but they have some antique________ in it．
A．furniture B．furnitures
C．piece of furnitures D piece of furniture
---Are my clothes too casual?
---No. You can go__________you are.
| A．as | B．what | C．that | D．where |
More and more people shop online,________advantage of low prices.
| A．having taken | B．taking | C．taken | D．having been taken |
The Day of the Dead, an ancient Mexican festival, is not a sad day, but _________time to celebrate__________cycle of life.
| A．a, the | B．不填, the | C．不填,a | D．the, a |
How_________I help them to understand when they won’t listen to me?
| A．can | B．would | C．may | D．must |