— _______ classes do you have every weekday?
—Seven classes.
| A．How many | B．How much | C．How long | D．How often |
. As a volunteer, he often goes to the hospital to ________ the sick.
| A．cheer up | B．fix up | C．set up | D．put up |
_______ of the students will take part in the sports meeting.
| A．Three five | B．Three fives | C．Three fifth | D．Three fifths |
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 |