I can think of many cases _______ students obviously knew a lot of English words and expressions but couldn’t write a good essay.
. —How long have you been here? —Only about five minutes. Henry and Simon _____________ here with me.
. —Was _________________ problem solved? —We were trying to think of _________________ way out, but it was difficult to find one.
. Take the spare batteries with you _________________ you need them.
. —Which T-shirt do you prefer? Blue or green? — _________________ will be OK. I don’t mind.
. It's so nice to hear from her again. _____________, we last met more than thirty years ago.