Among the problems is _____ they often failed to take into account that those people are more likely to use sunscreen.
| A．that | B．what | C．when | D．where |
There is a 20 minute parking _____ here, so we must get back to the car very quickly.
| A．freedom | B．limit | C．allowance | D．prohibition |
Because of the poor harvest, wheat prices have _____ in the last six months.
| A．added | B．jumped | C．amounted | D．developed |
I can't advise you what to do. You must use your own _____.
| A．opinion | B．guesswork | C．justice | D．judgment |
Tell your brother to come _____, because it's going to rain in a minute or two.
| A．indoors | B．outdoors | C．outward | D．inwards |
A successful scientist needs _____ if he wants to make hypothesis (假设) of how processes work and how events take place.
| A．permission | B．penetration | C．imagination | D．convention |