Columbus ______ America in 1492. But he didn’t explore it.
A. looked for B. found out C. discovered
Trees and flowers ________every year to make our country more beautiful.
| A．is planted | B．was planted | C．are planted | D．were planted |
—Mr. Smith, would you please speak a little more ________?
—Sorry! I thought you could follow me.
| A．quietly | B．slowly | C．quickly | D．politely |
—Liu Qian is good at doing the tricks with the cards.
—Yes, but if you watch carefully, you can see _______he does them.
| A．who | B．what | C．which | D．how |
My bike is broken, so I have to go to school _________ my mother's.
| A．by | B．in | C．on | D．with |
— What do you want to eat for lunch? I will prepare it earlier today.
— You_____, mum. Let’s go out to have something different.
| A．mustn’t | B．can’t | C．shouldn’t | D．don’t have to |