In case you ______ still have anything to offer, please contact our manager while he is available．

---Did you ask Sophia for help? ----I ______ need to- I managed perfectly well on my own.

One of our rules is that every student ______wear school uniform while at school.

-- Mum，can I go on a holiday with my classmates this summer vacation?-- OK．You __________ have a chance if you get along well with your studies．

—Bob, where is Linda?—She          be in the library, but I am not sure.