Carl Linnaeus made great contributions to ________ plant species.
We all hold such a point that _______ good knowledge of English is what is needed badly in ______ international trade today.
It was not until early in the morning ______ he woke up _______ he found _____ he lay asleep on the floor for a night.
_____ at the end of next month, the stadium is being built day and night by the construction workers.
Practising Chinese Kung Fu can not only ______ one’s strength, but also develop one’s character.
---What’s that noise? ---- Oh, I forgot to tell you. The new machine ____________.