As long as you stick to it,you’ll make progress ________.
| A．in time | B．at a time | C．at one time | D．on time |
【2015·陕西】Reading her biography, I was lost in admiration for ________Doris Lessing had achieved in literature.
| A．what | B．that | C．why | D．how |
【2015·四川】The exhibition tells us____we should do something to stop air pollution.
| A．where | B．why | C．what | D．which |
【2015·重庆】We must find out ____ Karl is coming, so we can book a room for him.
| A．when | B．how | C．where | D．why |
【2015·浙江】If you swim in a river or lake, be sure to investigate ____ is below the water surface.Often there are rocks or branched hidden in the water.
| A．what | B．who | C．that | D．whoever |
A ship in harbor is safe, but that's not ______ ships are built for.
| A． | what | B． | whom | C． | why | D． | when |