Sometimes walking is __________ than driving during the busy traffic time.
| A．fast | B．faster | C．slow | D．slower |
My sister was born _____________ a Friday morning.
| A．in | B．On | C．at | D．for |
Mary is a student of___________.
| A．Jack mother | B．Jack’s mother | C．Jack mother’s | D．Jack’s mother’s |
What __________ useful book! And __________book is very interesting.
| A．an；a | B．a； a | C．a; the | D．an； the |
根据A栏的问题，选择B栏的答语。