If I had taken part in the 400-meter relay race in the sports-meet, our class _____ the race．I’m _____ weight this year．

In order not to let the others hear what he said, he _____ the news to me. [ ]

per is due next month, and I am working seven days ______ week, often long into______night.

下列各句子中，没有错别字的一项是（ ）

himself to his research on the IT technology, hesoon made a breakthrough.