选词填空（用适当形式）。 call...up, now and then, set about, dive into, set out, hang on,out of order, get through, ring back, ring off 1. However I tried to dial your number, I couldn't _____. 2. To make sure that he was at home, I ____ him ____ in advance. 3. Just___  with it, and you will succeed. 4. The whole things were ____   , and mother was angry. 5.  ____   solving the problem now. 6. She____the water and came up coughing. 7. The shepherd____to look for the sheep that had wandered away. 8. He was very angry and____before I finished my sentence. 9. He was very busy then and promised to ____      later. 10.____  ,he would visit me in the countryside.