Mary is very late, she ______.
| A．may miss her train | B．may have missed her train |
| C．must miss her train | D．could miss her train |
Your brain uses information from both your nose and your tongue to ________ what something tastes like.
| A．point out | B．give out | C．figure out | D．pick out |
According to the newly passed Road Traffic Safety Law, there are now tougher ________ for drunken drivers.
| A．principles | B．penalties |
| C．proposals | D．prejudices |
________ the reason, it is for sure that yawning can be passed from person to person.
| A．Whatever | B．Wherever | C．Whichever | D．However |
It's important to learn how the whole system works. Sometimes, ________， it's the details that interest us the most.
| A．therefore | B．meanwhile | C．furthermore | D．though |
For many people, paper is ________ better material, because ________ process for recycling paper seems much easier.
| A．the; a | B．a; the | C．/; a | D．the; / |