A survey of the opinions of experts ________ that three hours of outdoor exercise a week ________ good for one’s health.
| A．show; are | B．shows; is | C．show; is | D．shows; are |
Do you remember the day ________ we played all day along the seaside?
| A．which | B．that | C．when | D．about which |
The country's railway system has launched online ticket-booking and a real-name ticket purchasing system, and _______ requires passengers to provide their ID numbers when buying tickets.
| A．which | B．that | C．what | D．this |
It’s time you changed your attitude _____ women now, Tom; they hold up half the sky, you know.
| A．towards | B．from | C．with | D．in |
— Shall Mary come to the concert with us？
－Not_____she has finished her paper．
| A．since | B．once | C．when | D．unless |
Manyastudent _____thatmistakebefore.
| A．hasmade | B．havemade | C．hasbeenmade | D．hadmade |