–Who is the tallest boy?
–It ______ be John. Because John is of medium height..
| A．must | B．needn’t | C．might | D．can’t |
Robots are ______ do the same things as we do.
| A．enough clever to | B．clever enough to |
| C．too clever to | D．so clever that |
Eli did ______ in painting, but Sam did ______.
| A．good, better | B．well, better |
| C．good, best | D．well, best |
Bring some ______ and mix them together with bread pieces.
| A．onions | B．butter | C．yogurt | D．sugar |
Tigers wait ______ it is dark, then they go out to find their food.
| A．though | B．as | C．because | D．until |
______ do you read English newspapers?
I read 21st Century every day.
| A．How long | B．How often |
| C．How soon | D．How many times |