The tourists gathered at________ was once a square, _______ is used as a theme park.
| A．where; which | B．what; which | C．which; what | D．that; which |
.The current political _____ of our country is favorable for foreign investments.
| A．climate | B．weather | C．state | D．occasion |
The store had no more red shoes _____, so Mary chose brown ones instead.
| A．in demand | B．in store | C．in need | D．in stock |
. Don't go too far into the sea, children, or the waves will _____ you off your feet.
| A．flow | B．cut | C．press | D．sweep |
. You will get to the church more quickly if you take this _____ across the fields.
| A．track | B．passage | C．method | D．journey |
Radium salts, which have been found to _____ in bones, give rise to cancers of the bone.
| A．pile up | B．build up | C．keep up | D．pull up |