There’s no way of knowing why one man makes an important discovery ________ another man, also intelligent, fails.
——Let’s go to the movies after supper. OK? ——_______________.
Mary came in , _____ by her dog.
I failed in the final exam last term and only then ______ the importance of studies.
I hated practicing, but I stuck_______ _it and now I can play pretty well.
I smell something ________in the kitchen. Can I call you back in a minute?