----Glad to see you back! How long ______ you ______ in Europe? ----Three months. I’m off to South Africa next week.
71. Such a small man can’t _____ reach the balloon one metre higher than he.
70. These books are _____ written for those who learn how to use computer. It’s an ABC of computer learning.
69. In order to keep fit, the retired women, whether rain or shine, go _____ for plenty of exercise early in the morning.
68. Yesterday my friend and I went to the supermarket nearby. We found that there were _______ nothing worth buying.
67. The young man _____ forgot that his girl friend’s birthday was drawing _____ .