s has been very smooth ______, we are notconfident that it will be completed on time

My old neighbor Charles enjoys___________ photos. He always goes out with his camera.

The new invention may _____ changes in the way they do their work.

38.The task is hard, ___, the workers managed to finish it in time

Congratulations! You’ve got the first prize in the EnglishContest.—_____ it be true? It’s unbelievable!