The total combined income of 48 countries in Africa is only a little more than _____ of Belgium.
| A．that | B．it | C．those | D．one |
. Many a professor _____ looking forward to visiting Germany now. Many scientists _____ studied animals and plants in the last two years.
| A．is; have | B．is; has | C．are; have | D．is; are |
Either you or he _____ interested in playing chess. _____ you or he fond of music at present?
| A．are; Are | B．is; Are | C．are; Is | D．is; Is |
He is one of the boys who _____ here on time. He is the only one of the boys who _____ here on time.
| A．has come; have come | B．have come; has come |
| C．has come; has come | D．have come; have come |
It depends on _______ he has enough money.
| A．if | B．weather | C．if or not | D．whether |
______ gets homes first is to cook the supper.
| A．Who | B．Whom | C．Those who | D．Whoever |