I ______ believe it _______ I see it with my own eyes.
---How much difficulty did you have________________ this problem? ---_____________. It's quite easy.
____________of the news reports _________written in English on the Internet.
_______hard work it is! And__________should I do to complete it well?
‘I’____the first letter in the word‘irregular’,and there is___‘u’and ___‘l’in it.
----- Betty telephoned to say welcome back. ------Really? _______.