问题

A number of students_ playing on the playground, but I don’t know what the exact number_.

A:is; is
B:are; are
C:is; are
D:are; is;

正确答案是：

同类题型

The temperature in this mountainous area ___ from day to day.

Where is your father working —Ina hospital_____ in the city of Huai’an.

.I’m going to Qingdao . Would you mindlooking after my dog—__________.

a tight budget for the trip, so I’m notgoing to fly _the airlines lower ticketprices.

Don’t be so naughty! Be your ________—Got it