The following chapters provide step-by-step instructions for practical _______ of genetic (基因)engineering to agriculture.
—I really don’t know whether I should tell my father about the exam. —Well, don’t speak until ________.
The basketball match was held from December 5th to 30th, during ________ time as many as 27 teams competed for the championship.
If he had not joined the army, he ________ alive now.
He is really nervous. He ________ back and forth all the night waiting for the results.
It was because we went on separate ways ________ I felt relieved.