一、单项选择
1．The black horse is___________ of the pair．
A．the strongest B．the stronger
C．the strong D．quite strong
2．It is a rule in his family that __________ comes home earlier should cook the dinner for the family．
A．anybody B．who C．who that D．whoever
3．I really wonder__________ he has posted me many parcels___________ we didn’t work together．
4．--How long ___________ each other before they__________ married?
--For about a year．
