幾個關於if的問題 - 自學

小弟昨天在做題目
裡面有一些關於if的用法
還有一些時態的用法，我也有點搞混了
看板上的大大能不能為小弟解答
選出選項的時候能否跟小弟說為什麼
感謝


If the yield ________ up from 9.8percent ,it would have been the highest
average yield since 1992
(A)would go (B) has gone (C)will go (D) had gone

Their monetary unit _______ stronger if they did something about
their deficit.
(A) will be (B) would be (C) can be (D) should be

If the wage parity agreement ________approved,there might have
been a strike.
(A)was not (B)is not (C) had not been (D)will not be

The boss will offer him a promotion if he________
to be more tactful
(A) will learn (B) had learned (C)should learn (D) were learning

This purchase ____________ a poor decsion if it had been made for
investment purpose only
(A) would have been (B) would be (C) may be (D) was


以下是幾個動詞時態的問題，煩請各位大大幫忙
When the shipment_________,he will dispatch it
to the proper department.
(A) will come in (B) is coming in(C) comes in (D) is going to in

The survey indicates profits are up;business________
(A) is being good (B) were good (C)good (D) has been good

By this time next year,merchandising ________greatly improved
(A) has been (B) is going to be(C) is (D) is being


如果有新的問題，小弟會在po上來











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