I’m told that languagepractisingcom is a free website______learners can not just learnvarious languages but also chat online

Has James finished his report on his EnquiryLearning yet\ —- I’m not sure. He _____ on it lastweek.

Those are______.

Several companies are each other a contract（合同）.

Have you ever been to Singapore?— Yes, I ____ there 3 times in 2009 alone