Many teenagers feel no difficulty （） computer. to learn。 learn。 in learning。 learned。
Some areas, （） their severe weather conditions, are sparsely populated. due to。 but for。 in spite of。 with regard to。
Although it"s tough finding a job these days, Henry got a （） in a famous company. place。 position。 post。 patch。
The last time I saw her was （） my brother"s wedding ceremony three years ago. to。 at。 in。 during。
Education cannot be （） in any country. rejected。 deleted。 neglected。 refused。
The doctor said that mental （） is the major cause of his sleeping problem.
