“人们曾用求神膜拜自然\用思维证明自然\大自然在微笑——\仍然没有供出她内心的秘密。”下列对材料理解正确的是
I found the lecture hard to follow because it ______ when I arrived. started B. was starting C. would start D. had started
--- What time is it? --- I have no idea. But just a minute, I ______ it for you.
The best moment for the football star was ______ he scored the winning goal.
______ the forest park is far away, a lot of tourists visit it every year.
There are still many problems ______ before we are ready for a long stay on the Moon.