Only _____ as an interpreter _____ how important it was to practise spoken English.
You know he is not going to let us leave early if we __________ get the work done.
There’s no light on — they __________ be at home.
— Could I have a word with you, mum? — Oh dear, if you __________.
—Is Jack on duty today? —It __________ be him. It’s his turn tomorrow.
As you worked late yesterday, you __________ have come this morning.