Of the two brothers, Bill is ____ younger one, and he is a quiet boy, _____ that most adults like very much.
| A．a; one | B．a ; the one | C．the; one | D．the ; the one |
The United States of America _____one of the most developed countries in the world.
| A．is | B．are | C．was | D．were |
The whole class _____the teacher attentively.
| A．are listening to | B．is listening to | C．are listening | D．is listening |
Jane is one of the best students in her class who _____by their teacher.
| A．are praised | B．is praised | C．praised | D．praising |
Those who ____ in ____compositions， please hand them in this afternoon.
| A．hasn‘t handed； his | B．haven’t handed； their |
| C．has handed； their | D．have handed； his |
Three-fourths of the homework _____today.
| A．has finished | B．has been finished |
| C．have finished | D．have been finished |