Hearing that he would have to be given another injection, the boy _ a smile to cover up his fear.
________by the advances in technology, many farmers have set up wind farms on their land.
He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside.
Is this the place_____ John was born?
The suggestion ________ by the teacher is available.
To make members of a team perform better, the trainer first of all has to know their ______ and weaknesses.