I'm afraid I have to go now, for my parents_______ outside.
| A．had waited | B．have waited | C．are waiting | D．were waiting |
bamboo
| A．too | B．good | C．foot | D．wood |
moved
| A．entered | B．waited | C．sounded | D．checked |
machine
| A．sandwich | B．Christmas | C．touch | D．rush |
| A．pull | B．bubble | C．hurry | D．brush |
__________the doctors in their hospital is about one thousand, and sixty percent of them___________ women.
| A．A number of; is | B．The number of; are |
| C．The number of; is | D．A number of; are |