Instead of getting down to a new task as I ______, he examined the previous work again.( )
had expected
have expected
would expect
expect
()I found the lecture hard to follow because it ____ when I arrived.
I haven’t finished my report, but I promise I ______ it by the end of the week.
It's a custom in China to have some tea or other drinks before the meal ________.
—What’s all that noise about outside? —Oh, I forgot to tell you. The road to the railway station ______.
Since the time humankind started gardening, we _____to make our environment more beautiful.