_ he like math?一 Because it’s difficult.

Theheadofthecompanypromisedtodealwithmattersofthissort ________hereturnedtohisoffice. [ ]

Are there any English story books for us students in the library? —There are only a few, ______.

Youshouldmakeitaruletoleavethings________youcanfindthemagain. [ ]

Fred doesn’t eat any vinegar because he thinks it’s __________.