—Hi, Bob, are you going to attend tomorrow’s conference?—Oh, I’m afraid not, invited to.
I _____ sooner but I didn’t know that they were waiting for me .
Experiments of this kind ___in both the U.S and Europe well before the Second World War
The situation forced my mother and I exchanged our roles as child and caretaker, making me grow up much faster than the _____ child.
It is the first time that he ______ here and now it is high time that he ______ around.
The construction of the gym caused much noise, __________ it difficult for people nearby to sleep.