Without the friction (摩擦力) between feet and the ground, people would ______ be able to walk.
| A．in no time | B．by all means | C．on any account | D．in no way |
Look! There are so many mistakes in your composition. You ________ have fixed full attention on it.
| A．can | B．should |
| C．need | D．might |
________ we go to the McDonald's? I'm sick of the food there.
| A．Need | B．Can |
| C．Shall | D．Must |
With all his money, he ________ worry about a little thing like 5 cents!
| A．can | B．must |
| C．may | D．should |
—It's no easy task to catch a ticket on a website that receives 1 billion clicks daily.
—I can't agree with you more. There ________ be errors for every single step.
| A．should | B．must |
| C．can | D．will |
The family ________ on time, but their car had a flat tyre on the halfway.
| A．would arrive | B．could arrive |
| C．must have arrived | D．could have arrived |