Before a problem can be solved,it must be obvious____the problem itself is.
.Seeing her mother come back, ______.
.-- Have you seen the film? -- Yes. I ______ it three times when I was in Tokyo.
.The headmaster made a suggestion that the sports meet until next Sunday.
.The wet weather will continue tomorrow, when a cold front ______ to arrive.
.— This is one of the oldest trees in the world. —_____ such a big tree.