You needn’t have ________ the speaker when he was speaking; there was enough time afterwards for you to ask questions.
29. New ways _____ to prevent the river _____.
28. The first thing she did _____ up to her trainer and thanked her.
27. The boy gathered all his _____ to stand up.
26. We were all waiting for you. You _____ for the seaside by yourself without leaving a message.
25. When a person wants to operate the computer, _____ read instructions first.