Mr. Smith is always on time for everything. How ________ it be that he was late for the flight?
| A．can | B．must | C．may | D．need |
The reason ___ he is absent is ___he has a bad cold.
| A．why; that | B．why; because | C．that; because | D．for; that |
_______ people died ______ starvation that year will never happen.
| A．That; of | B．That; from | C．What; from | D．How; of |
________ hard it might be, I will work it out.
| A．Whatever | B．How | C．However | D．What |
You may give this message to _________ is at office.
| A．who | B．whom | C．whomever | D．whoever |
You may have one of these; in other words, you have ______ you choose.
| A．whichever | B．what | C．no matter what | D．no matter which |