At the conference, they came up with three different _____ to solving the serious problem.

What______useful dictionary for beginners of English! Where did you get it— I bought it in the bookshop.

Order came that all the army supply ______ to the front before daybreak.

I can think of many cases____ students obviously knew a lot of English words and expressions but couldn’t write a good essay[ ]

Professor Smith, along with his assistants, _________on the project day and night to meet the deadline