__________ Tom __________ Sam may go with you because one of them must stay at home.
A. Both; and B. Either; or C. Not only; but also
Some peoplefeel sick when they read a book in a car or on a boat．
| A．must | B．should | C．may | D．need |
US peoplelike to have a barbecue in a park，a lake or in their backyards．
| A．beside | B．below | C．in | D．over |
We should learn from ourso that we won't repeat them．
| A．experiences | B．experiments | C．mistakes | D．opportunities |
—How can I make full use of my time?
—Makea clear timetable first．
| A．you | B．your | C．yours | D．yourself |
—Tokyo will host2020 Sumner Olympics．
—Really? It will befirst Asian city to host the Olympics twice．
| A．a；a | B．the；the | C．the；a | D．a；the |