—Can I borrow your ruler, please?
—Yes, you ________. But you must return it to me before lunchtime.
| A．have | B．can | C．must | D．used to |
Helen encouraged me to speak English as much as possible because practice ___ perfect.
| A．becomes | B．became | C．will make | D．makes |
With the development of modern industry, there will be ___ living space for wild animals.
| A．fewer and fewer | B．less and less |
| C．more and more | D．bigger and bigger |
Audrey Hepburn, one of the greatest actresses, was ___ to take on challenges in her life.
| A．enough brave | B．brave enough |
| C．stupid enough | D．enough stupid |
--Wow, so many new buildings! But it used to be a poor village.
--Yes, ___ has changed in our hometown.
| A．Nothing | B．Nobody | C．Everything | D．Everybody |
Don't go out ___ the rain stops. Otherwise, you'll get wet!
| A．after | B．since | C．when | D．until |