It’s late. David washes his face _______ goes to bed.
| A．and | B．but | C．so | D．or |
Of the two T-shirts，I’d choose the___one to save some money for a book．
| A．cheapest | B．cheaper | C．more expensive | D．most expensive |
Students in the USA spendtime their homework than we do.
| A．little , to do | B．little, doing |
| C．less , doing | D．less , do |
will it take us to fly to Hainan and will the trip to Hainan cost us?
| A．How much, how long | B．How long, how much |
| C．How much, how much | D．How long, how long |
Whathonest boy! And he isbest student of all.
| A．a; a | B．an; the | C．a; the | D．the; the |
He is one of_______in China.
| A．the great scientist | B．the great scientists |
| C．the greatest scientist | D．the greatest scientists |