79. Is there any ________________(explain) for his strange behavior?

78. They spoke very _____________(high) of him.

77. We tried all sorts of medicine but they were all ______________(use).

76. I'm not certain of the __________(true) of his story.

75. You should always be _______________(thank) to your parents for giving you a

good education.

74. In union there is ___________________(strong).

73. The letter is too long. Can you _____________(short) it a little?

72. They keep two _____________(serve): a cook and a gardener.

71. Would you do it again if you had the ___________(choose)?

70. I'd like to see more _______________(science) methods used.