Is some American friends visited last week?

New Zealand has a population of about 3.8 million, ____ about fourteen percent are Mori

d worker insisted that he________ old,and________ back to the working post again

Evidence has been found through years of study______ children’s early sleeping problem likely tocontinue when they grow up. [ ]

The reason _____ he pretended (故意) to sleep in class was quite different from the one _____ you explained to me. [ ]