Having a trip abroad is certainly good for the old couple, but it remains _______ whether they will enjoy it.
| A．to see | B．to be seen | C．seeing | D．seen |
Loulan city is not at all a traveler who has never seen the desert before can imagine.
| A．that | B．what | C．which | D．where |
The sunspot came into its active stage last year, that happens once every eleven years.
| A．one | B．it | C．the one | D．what |
is known to us is that the 2016 Olympic Games will be held in Rio de Janeiro, Brazil.
| A．It | B．Which | C．As | D．What |
good service, the restaurant offers different kinds of traditional Yangzhou dishes to guests from different places.
| A．Far from | B．Instead of | C．Apart from | D．Regardless of |
Many of us who have never been to Egypt always Egypt with the ancient pyramids.
| A．associate | B．abolish | C．accumulate | D．acquire |