Infertility a common problem Part 1

We have mixed up all the irregular verbs in the text below, try and find the correct place for each one..

Infertility - a common problem Part 1 (Teacher: Michael)

Infertility is a problem that affects something like one couple in every ten. about that. It is a remarkable figure. One out of every ten couples can't have a baby which they desperately want. There are to approximately 40 possible physical causes of infertility, although you could probably more if you looked hard enough.

Among women, the common problems are a failure of ovulation and a blockage of the fallopian tubes (often caused by some previous infection). Among men (who are just likely to the cause of infertility as their partners), the problems commonly include failure to produce spermatozoa in sufficient numbers, and a failure to produce spermatozoa of good enough quality. Those disorders can themselves traced back to other problems in many causes.

When a woman fails to ovulate, for example, the cause may a specific disorder such as endometriosis or a general complaint such as a sudden weight loss. When a man doesn't produce enough sperm, or produces sperm of an inferior quality, the basic cause may an old infection, such as mumps, or an accident. Of course, there can mechanical causes for infertility.

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